Canada is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area. Canada's southern border with the United States is the world's longest bi-national land border, its capital is Ottawa, its three largest metropolitan areas are Toronto and Vancouver. As a whole, Canada is sparsely populated, the majority of its land area being dominated by forest and tundra, its population is urbanized, with over 80 percent of its inhabitants concentrated in large and medium-sized cities, many near the southern border. Canada's climate varies across its vast area, ranging from arctic weather in the north, to hot summers in the southern regions, with four distinct seasons. Various indigenous peoples have inhabited what is now Canada for thousands of years prior to European colonization. Beginning in the 16th century and French expeditions explored, settled, along the Atlantic coast.
As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces; this began an accretion of provinces and territories and a process of increasing autonomy from the United Kingdom. This widening autonomy was highlighted by the Statute of Westminster of 1931 and culminated in the Canada Act of 1982, which severed the vestiges of legal dependence on the British parliament. Canada is a parliamentary democracy and a constitutional monarchy in the Westminster tradition, with Elizabeth II as its queen and a prime minister who serves as the chair of the federal cabinet and head of government; the country is a realm within the Commonwealth of Nations, a member of the Francophonie and bilingual at the federal level. It ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, education.
It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many other countries. Canada's long and complex relationship with the United States has had a significant impact on its economy and culture. A developed country, Canada has the sixteenth-highest nominal per capita income globally as well as the twelfth-highest ranking in the Human Development Index, its advanced economy is the tenth-largest in the world, relying chiefly upon its abundant natural resources and well-developed international trade networks. Canada is part of several major international and intergovernmental institutions or groupings including the United Nations, the North Atlantic Treaty Organization, the G7, the Group of Ten, the G20, the North American Free Trade Agreement and the Asia-Pacific Economic Cooperation forum. While a variety of theories have been postulated for the etymological origins of Canada, the name is now accepted as coming from the St. Lawrence Iroquoian word kanata, meaning "village" or "settlement".
In 1535, indigenous inhabitants of the present-day Quebec City region used the word to direct French explorer Jacques Cartier to the village of Stadacona. Cartier used the word Canada to refer not only to that particular village but to the entire area subject to Donnacona. From the 16th to the early 18th century "Canada" referred to the part of New France that lay along the Saint Lawrence River. In 1791, the area became two British colonies called Upper Canada and Lower Canada collectively named the Canadas. Upon Confederation in 1867, Canada was adopted as the legal name for the new country at the London Conference, the word Dominion was conferred as the country's title. By the 1950s, the term Dominion of Canada was no longer used by the United Kingdom, which considered Canada a "Realm of the Commonwealth"; the government of Louis St. Laurent ended the practice of using'Dominion' in the Statutes of Canada in 1951. In 1982, the passage of the Canada Act, bringing the Constitution of Canada under Canadian control, referred only to Canada, that year the name of the national holiday was changed from Dominion Day to Canada Day.
The term Dominion was used to distinguish the federal government from the provinces, though after the Second World War the term federal had replaced dominion. Indigenous peoples in present-day Canada include the First Nations, Métis, the last being a mixed-blood people who originated in the mid-17th century when First Nations and Inuit people married European settlers; the term "Aboriginal" as a collective noun is a specific term of art used in some legal documents, including the Constitution Act 1982. The first inhabitants of North America are hypothesized to have migrated from Siberia by way of the Bering land bridge and arrived at least 14,000 years ago; the Paleo-Indian archeological sites at Old Crow Flats and Bluefish Caves are two of the oldest sites of human habitation in Canada. The characteristics of Canadian indigenous societies included permanent settlements, complex societal hierarchies, trading networks; some of these cultures had collapsed by the time European explorers arrived in the late 15th and early 16th centuries and have only been discovered through archeological investigations.
The indigenous population at the time of the first European settlements is estimated to have been between 200,000
ArcelorMittal S. A. is a multinational steel manufacturing corporation headquartered in Luxembourg City. It was formed in 2006 from the merger of Arcelor by Indian-owned Mittal Steel. ArcelorMittal is the world's largest steel producer, with an annual crude steel production of 92.5 million metric tonnes as of 2018. It is ranked 123 in the 2017 Fortune Global 500 ranking of the world's biggest corporations. ArcelorMittal was created by the takeover of Western European steel maker Arcelor by Indian-owned multinational steel maker Mittal Steel in 2006, at a cost of €40.37 per share $33 billion total. Mittal Steel launched a hostile takeover bid which replaced a previous planned merger between Arcelor and Severstal, which had lacked sufficient shareholder approval; the resulting merged business was headquartered in Luxembourg City. The resulting firm produced 10% of the world's steel, was by far the world's largest steel company. Total revenues in 2007 were $105 billion; the company earned revenues f $105 billion in 2007.
By February 2008, the company had 320,000 employees in 60 countries. In October 2008, the market capitalisation of ArcelorMittal was over $30 billion, after peaking at $32.5 billion in September 2008. At the end of 2008, the company reported operating income of around $12 billion. In December 2008, ArcelorMittal announced several plant closings, including the Bethlehem Steel plant in Lackawanna, New York, LTV Steel in Hennepin, Illinois. After purchase of Kryvorizhstal, Ukraine's largest steel producer, employment was scaled back from 57,000 employees to 30,000. In 2010, the company's operating income had fallen to $4.9 billion, with sales down 10 percent from the year earlier, income down 50 percent as steel prices slumped. In 2011, the company began curtailing its European production to match the reduced demand for steel, it sold Skyline Steel and Astralloy to a rival, for $605 million. On 26 January 2011, the stainless steel division split off as Aperam; as of 2012, due to overcapacity and reduced demand in Europe it had idled 9 of 25 blast furnaces.
On 31 October 2012, the company reported a third-quarter loss of $709 million as compared to a $659 million profit for the same period a year ago, citing the slow down in China's economy. In 2012 ArcelorMittal had $22 billion of debt. In January 2013, ArcelorMittal bid $1.5 billion to acquire ThyssenKrupp AG's rolling mill in Calvert, United States. On 26 February 2014, ThyssenKrupp sold their Calvert carbon steel facility to ArcelorMittal and Nippon Steel for $1.55 billion, as a new joint venture. The facility was renamed AM/NS Calvert through the 50/50 joint partnership with Nippon Steel & Sumitomo Metal Corp; the firm entered into a $2.2 billion contract to develop an iron ore deposit in Senegal. This included construction of a 750 km railway line. After stalling on the contract and failing to build according to schedule the Government of Senegal sued. In September 2013, the government of Senegal won a court case before an international tribunal to rescind a $2.2 billion deal with ArcelorMittal after the company suspended work on an iron ore mine in the country.
In June 2014, the International Chamber of Commerce's arbitration court in Paris awarded Senegal $150 million. Dealing with price and demand fluctuations in the steel market, from 2012 to 2014 ArcelorMittal restructured its European division by reducing employee numbers and closing plants. In May, 2014, ArcelorMittal, citing economic self-interest, declared its opposition to sanctions on Russia; as of June 2014, ArcelorMittal accounted for 7 percent of world steel production. After being shut out of the Chinese steel industry in 2005 along with other foreign companies, in 2014 the company announced it was planning new plants in China. In 2014, the company had an annual crude steel production of 98.1 million tons. Following an investigation first launched in 2008, in August 2016 the South African Competition Commission found the company guilty of price fixing. ArcelorMittal was fined US$110.9 million, as part of the settlement agreed to invest R4.64 billion in capital over five years. According to the findings, the firm had been part of a 17 steel member groups nicknamed "Club Zürich" that became known as "Club Europe."
Between January 1984 and September 2002, the companies fixed the market and exchanged confidential corporate information. In 2015, the company had a net loss of $7.9 billion. Between February 2015 and February 2016, share value dropped 60%, making the company the "worst performer" in the FTSEurofirst300 index; the CEO said the company had performed poorly in 2015 due to "Chinese exports depressing prices." Early in 2016, the company announced it had raised $3 billion in new investment capital to help reduce debt to $11.7 billion of debt. In early 2016 the company announced a program to boost core profit by $3 billion by 2020 "through a mixture of cost-cutting, increased production and a focus on higher-value forms of steel." Chairman Lakshmi Mittal announced doubled earnings the following year in May 2017. Along with the increase in capital, the company sold its 35% stake in Gestamp Automacion for $979 million, with the goal of reducing ArcelorMittal's debt to less than $12 billion. By February 2016, the company made about 6% of the world's steel.
It ranked 108th in the 2016 Fortune Global 500 ranking of the world's biggest corporations. In February 2017 ArcelorMittal announced its first annual profits in five years. In February 2017, ArcelorMittal and Votorantim announced plans to combine their long steel operations in Brazil. Under th
The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
Transport or transportation is the movement of humans and goods from one location to another. In other words the action of transport is defined as a particular movement of an organism or thing from a point A to the Point B. Modes of transport include air, water, cable and space; the field can be divided into infrastructure and operations. Transport is important because it enables trade between people, essential for the development of civilizations. Transport infrastructure consists of the fixed installations, including roads, airways, waterways and pipelines and terminals such as airports, railway stations, bus stations, trucking terminals, refueling depots and seaports. Terminals may be used both for maintenance. Vehicles traveling on these networks may include automobiles, buses, trucks, watercraft and aircraft. Operations deal with the way the vehicles are operated, the procedures set for this purpose, including financing and policies. In the transport industry and ownership of infrastructure can be either public or private, depending on the country and mode.
Passenger transport may be public. Freight transport has become focused on containerization, although bulk transport is used for large volumes of durable items. Transport plays an important part in economic growth and globalization, but most types cause air pollution and use large amounts of land. While it is subsidized by governments, good planning of transport is essential to make traffic flow and restrain urban sprawl. Humans' first means of transport involved walking and swimming; the domestication of animals introduced a new way to lay the burden of transport on more powerful creatures, allowing the hauling of heavier loads, or humans riding animals for greater speed and duration. Inventions such as the wheel and the sled helped make animal transport more efficient through the introduction of vehicles. Water transport, including rowed and sailed vessels, dates back to time immemorial, was the only efficient way to transport large quantities or over large distances prior to the Industrial Revolution.
The first forms of road transport involved animals, such as horses, oxen or humans carrying goods over dirt tracks that followed game trails. Many early civilizations, including those in Mesopotamia and the Indus Valley, constructed paved roads. In classical antiquity, the Persian and Roman empires built stone-paved roads to allow armies to travel quickly. Deep roadbeds of crushed stone underneath kept such roads dry; the medieval Caliphate built tar-paved roads. The first watercraft were canoes cut out from tree trunks. Early water transport was accomplished with ships that were either rowed or used the wind for propulsion, or a combination of the two; the importance of water has led to most cities that grew up as sites for trading being located on rivers or on the sea-shore at the intersection of two bodies of water. Until the Industrial Revolution, transport remained slow and costly, production and consumption gravitated as close to each other as feasible; the Industrial Revolution in the 19th century saw a number of inventions fundamentally change transport.
With telegraphy, communication became independent of the transport of physical objects. The invention of the steam engine followed by its application in rail transport, made land transport independent of human or animal muscles. Both speed and capacity increased allowing specialization through manufacturing being located independently of natural resources; the 19th century saw the development of the steam ship, which sped up global transport. With the development of the combustion engine and the automobile around 1900, road transport became more competitive again, mechanical private transport originated; the first "modern" highways were constructed during the 19th century with macadam. Tarmac and concrete became the dominant paving materials. In 1903 the Wright brothers demonstrated the first successful controllable airplane, after World War I aircraft became a fast way to transport people and express goods over long distances. After World War II the automobile and airlines took higher shares of transport, reducing rail and water to freight and short-haul passenger services.
Scientific spaceflight began in the 1950s, with rapid growth until the 1970s, when interest dwindled. In the 1950s the introduction of containerization gave massive efficiency gains in freight transport, fostering globalization. International air travel became much more accessible in the 1960s with the commercialization of the jet engine. Along with the growth in automobiles and motorways and water transport declined in relative importance. After the introduction of the Shinkansen in Japan in 1964, high-speed rail in Asia and Europe started attracting passengers on long-haul routes away from the airlines. Early in U. S. history, private joint-stock corporations owned most aqueducts, canals, railroads and tunnels. Most such transport infrastructure came under government control in the late 19th and early 20th centuries, culminating in the nationalization of inter-city passenger rail-service with the establishment of Amtrak. However, a movement to privatize roads and other infrastructure has gained some ground and adherents.
A mode of transport is a solution that makes use of a particular type of vehicle and operation. The transport of a person or of cargo may invol
Republic Steel is an American steel manufacturer, once the country's third largest steel producer. It was founded as the Republic Iron and Steel Company in Youngstown, Ohio in 1899. After rising to prominence during the early 20th Century, Republic suffered heavy economic losses and was bought out before re-emerging in the early 2000s as a subsidiary; the company manufactures Special Bar Quality steel bars and employs around 2,000 people. It is owned by Grupo Simec, based in Guadalajara, Mexico. In 1927, Cyrus S. Eaton acquired and combined Republic with several other small steel companies, with the goal of becoming large enough to rival U. S. Steel; the newly named Republic Steel Corporation was headquartered in Cleveland and became America's third largest steel company, trailing only U. S. Steel and Bethlehem Steel after acquiring Bourne-Fuller Company and the Central Alloy Steel Company in the 1930s. Tom M. Girdler became the first chairman of the board of directors. Eaton hired Girdler from Laughlin Steel Company, where he had served as president.
Girdler modernized Republic Steel with the introduction of better alloys such as "light steel". During World War II, while still chairman of Republic Steel, Girdler relocated to California to serve as chief executive officer of Consolidated Aircraft, a military aircraft manufacturer. Following the war, Girdler left Consolidated to run Republic's aviation department. Republic Steel was known for its labor problems during the Depression. On Memorial Day, May 26, 1937, a strike escalated into the Memorial Day massacre of 1937, in which Chicago police fired into an unarmed group of protesters, killed ten, four outright; this was documented by the 1937 short film Republic Steel Strike Riot Newsreel Footage. Girdler never signed the labor contract; when Girdler retired in 1945, Charles M. White was named chairman of the company. White was a protegé of Girdler's at Jones & Laughlin Steel, was appointed assistant vice president in charge of operations at Republic Steel in May 1930. Five years when Girdler was appointed president of Republic Steel, White was promoted to take over Girdler's role as vice president of operations.
In 1945, White was elected president of Republic Steel by the company's board of directors. He replaced Rufus Wysor. In 1960, at the age of 70, Charles M. White retired as chairman of Republic Steel, he remained on the board of directors until 1966, was given the title of honorary chairman. Thomas Patton, a private attorney who worked on the merger that formed Republic Steel was hired in 1936 to form Republic's internal legal department; as general counsel in the 1930s and 1940s, he negotiated with workers on behalf of management during the steel strikes. He went on to become president chief executive and chairman. Republic Steel built a steel rolling mill in 1958 in Cuba. Plant manager Ernest Breedlove fled Cuba with his new Cuban bride when Fidel Castro confiscated the plant and shipped the newly installed machinery to the Soviet Union. Breedlove built another modern plant for Compania Fundidora de Fierro y Acero de Monterrey, S. A. in Monterrey Mexico and pioneered the mini-mill concept at Nucor Steel.
Republic Steel was one of the last major steel firms to use low-phosphorus Adirondack magnetites, operating the Chateaugay Ore & Iron Company in Lyon Mountain, New York from 1939 to 1967. The Chateaugay mine was one of the deepest commercial iron ore mines in the United States, with stopes as much as 3,500 feet below the surface. Republic Steel remained prosperous until the 1970s, when rising foreign imports, labor costs, other factors caused severe stress at Republic and throughout the steel industry in the U. S. In 1984, Republic merged into the Jones and Laughlin Steel subsidiary of the LTV Corporation, with the new entity being known as LTV Steel. An employee stock ownership plan bought LTV's steel bar division and renamed it Republic Engineered Steels in 1989. In 1998, Republic Engineered Steels merged with Bar Technologies to become Republic Technologies International. Republic Engineered Products was established in December 2003 with the purchase of operating assets from Republic Engineered Products LLC.
In July 2005 RES was acquired by Industrias CH, S. A de C. V.. In September 2011 RES changed its name to Republic Steel. In April 2014, the company agreed to pay a $2.4 million fine to the Occupational Safety and Health Administration and agreed to "settle alleged health and safety violations" at four Republic Steel facilities—in Canton and Massillon in Ohio, in Blasdell, New York. OSHA said they found over 100 violations of safety at the facilities run by Republic. Memorial Day massacre of 1937 Little Steel strike Western Reserve Historical Society history Ruminski, Clayton J. Iron Valley: The Transformation of the Iron Industry in Ohio’s Mahoning Valley, 1802—1913
Glass is a non-crystalline, amorphous solid, transparent and has widespread practical and decorative uses in, for example, window panes and optoelectronics. The most familiar, the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica, the primary constituent of sand; the term glass, in popular usage, is used to refer only to this type of material, familiar from use as window glass and in glass bottles. Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of 75% silicon dioxide, sodium oxide from sodium carbonate, calcium oxide called lime, several minor additives. Many applications of silicate glasses derive from their optical transparency, giving rise to their primary use as window panes. Glass will transmit and refract light. Glass can be coloured by adding metallic salts, can be painted and printed with vitreous enamels; these qualities have led to the extensive use of glass in the manufacture of art objects and in particular, stained glass windows.
Although brittle, silicate glass is durable, many examples of glass fragments exist from early glass-making cultures. Because glass can be formed or moulded into any shape, it has been traditionally used for vessels: bowls, bottles and drinking glasses. In its most solid forms it has been used for paperweights and beads; when extruded as glass fiber and matted as glass wool in a way to trap air, it becomes a thermal insulating material, when these glass fibers are embedded into an organic polymer plastic, they are a key structural reinforcement part of the composite material fiberglass. Some objects were so made of silicate glass that they are called by the name of the material, such as drinking glasses and eyeglasses. Scientifically, the term "glass" is defined in a broader sense, encompassing every solid that possesses a non-crystalline structure at the atomic scale and that exhibits a glass transition when heated towards the liquid state. Porcelains and many polymer thermoplastics familiar from everyday use are glasses.
These sorts of glasses can be made of quite different kinds of materials than silica: metallic alloys, ionic melts, aqueous solutions, molecular liquids, polymers. For many applications, like glass bottles or eyewear, polymer glasses are a lighter alternative than traditional glass. Silicon dioxide is a common fundamental constituent of glass. In nature, vitrification of quartz occurs when lightning strikes sand, forming hollow, branching rootlike structures called fulgurites. Fused quartz is a glass made from chemically-pure silica, it has excellent resistance to thermal shock, being able to survive immersion in water while red hot. However, its high melting temperature and viscosity make it difficult to work with. Other substances are added to simplify processing. One is sodium carbonate; the soda makes the glass water-soluble, undesirable, so lime, some magnesium oxide and aluminium oxide are added to provide for a better chemical durability. The resulting glass is called a soda-lime glass. Soda-lime glasses account for about 90% of manufactured glass.
Most common glass contains other ingredients to change its properties. Lead glass or flint glass is more "brilliant" because the increased refractive index causes noticeably more specular reflection and increased optical dispersion. Adding barium increases the refractive index. Thorium oxide gives glass a high refractive index and low dispersion and was used in producing high-quality lenses, but due to its radioactivity has been replaced by lanthanum oxide in modern eyeglasses. Iron can be incorporated into glass to absorb infrared radiation, for example in heat-absorbing filters for movie projectors, while cerium oxide can be used for glass that absorbs ultraviolet wavelengths; the following is a list of the more common types of silicate glasses and their ingredients and applications: Fused quartz called fused-silica glass, vitreous-silica glass: silica in vitreous, or glass, form. It has low thermal expansion, is hard, resists high temperatures, it is the most resistant against weathering. Fused quartz is used for high-temperature applications such as furnace tubes, lighting tubes, melting crucibles, etc.
Soda-lime-silica glass, window glass: silica + sodium oxide + lime + magnesia + alumina. Is transparent formed and most suitable for window glass, it has a high thermal expansion and poor resistance to heat. It is used for windows, some low-temperature incandescent light bulbs, tableware. Container glass is a soda-lime glass, a slight variation on flat glass, which uses more alumina and calcium, less sodium and magnesium, which are more water-soluble; this makes it less susceptible to water erosion. Sodium borosilicate glass, Pyrex: silica + boron trioxide + soda + alumina. Stan
Puerto Rico the Commonwealth of Puerto Rico and called Porto Rico, is an unincorporated territory of the United States located in the northeast Caribbean Sea 1,000 miles southeast of Miami, Florida. An archipelago among the Greater Antilles, Puerto Rico includes the eponymous main island and several smaller islands, such as Mona and Vieques; the capital and most populous city is San Juan. The territory's total population is 3.4 million. Spanish and English are the official languages. Populated by the indigenous Taíno people, Puerto Rico was colonized by Spain following the arrival of Christopher Columbus in 1493, it was contested by French and British, but remained a Spanish possession for the next four centuries. The island's cultural and demographic landscapes were shaped by the displacement and assimilation of the native population, the forced migration of African slaves, settlement from the Canary Islands and Andalusia. In the Spanish Empire, Puerto Rico played a secondary but strategic role compared to wealthier colonies like Peru and New Spain.
Spain's distant administrative control continued up to the end of the 19th century, producing a distinctive creole Hispanic culture and language that combined indigenous and European elements. In 1898, following the Spanish–American War, the United States acquired Puerto Rico under the terms of the Treaty of Paris. Puerto Ricans have been citizens of the United States since 1917, enjoy freedom of movement between the island and the mainland; as it is not a state, Puerto Rico does not have a vote in the United States Congress, which governs the territory with full jurisdiction under the Puerto Rico Federal Relations Act of 1950. However, Puerto Rico does have one non-voting member of the House called a Resident Commissioner; as residents of a U. S. territory, American citizens in Puerto Rico are disenfranchised at the national level and do not vote for president and vice president of the United States, nor pay federal income tax on Puerto Rican income. Like other territories and the District of Columbia, Puerto Rico does not have U.
S. senators. Congress approved a local constitution in 1952, allowing U. S. citizens on the territory to elect a governor. Puerto Rico's future political status has been a matter of significant debate. In early 2017, the Puerto Rican government-debt crisis posed serious problems for the government; the outstanding bond debt had climbed to $70 billion at a time with 12.4% unemployment. The debt had been increasing during a decade long recession; this was the second major financial crisis to affect the island after the Great Depression when the U. S. government, in 1935, provided relief efforts through the Puerto Rico Reconstruction Administration. On May 3, 2017, Puerto Rico's financial oversight board in the U. S. District Court for Puerto Rico filed the debt restructuring petition, made under Title III of PROMESA. By early August 2017, the debt was $72 billion with a 45% poverty rate. In late September 2017, Hurricane Maria made landfall in Puerto Rico; the island's electrical grid was destroyed, with repairs expected to take months to complete, provoking the largest power outage in American history.
Recovery efforts were somewhat slow in the first few months, over 200,000 residents had moved to the mainland State of Florida alone by late November 2017. Puerto Rico is Spanish for "rich port". Puerto Ricans call the island Borinquén – a derivation of Borikén, its indigenous Taíno name, which means "Land of the Valiant Lord"; the terms boricua and borincano derive from Borikén and Borinquen and are used to identify someone of Puerto Rican heritage. The island is popularly known in Spanish as la isla del encanto, meaning "the island of enchantment". Columbus named the island San Juan Bautista, in honor of Saint John the Baptist, while the capital city was named Ciudad de Puerto Rico. Traders and other maritime visitors came to refer to the entire island as Puerto Rico, while San Juan became the name used for the main trading/shipping port and the capital city; the island's name was changed to "Porto Rico" by the United States after the Treaty of Paris of 1898. The anglicized name was used by the U.
S. government and private enterprises. The name was changed back to Puerto Rico by a joint resolution in Congress introduced by Félix Córdova Dávila in 1931; the official name of the entity in Spanish is Estado Libre Asociado de Puerto Rico, while its official English name is Commonwealth of Puerto Rico. The ancient history of the archipelago, now Puerto Rico is not well known. Unlike other indigenous cultures in the New World which left behind abundant archeological and physical evidence of their societies, scant artifacts and evidence remain of the Puerto Rico's indigenous population. Scarce archaeological findings and early Spanish accounts from the colonial era constitute all, known about them; the first comprehensive book on the history of Puerto Rico was written by Fray Íñigo Abbad y Lasierra in 1786, nearly three centuries after the first Spaniards landed on the island. The first known settlers were the Ortoiroid people, an Archaic Period culture of Amerindian hunters and fishermen who migrated from the South American mainland.
Some scholars suggest their settlement dates back about 4,000 years. An archeological dig in 1990 on the island of Vieques found the remains of a man, designated as the "Puerto Ferro Man", dated to around 2000 BC; the Ortoiroid were displaced