1.
Magnesium chloride
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Magnesium chloride is the name for the chemical compound with the formula MgCl2 and its various hydrates MgCl2x. These salts are typical ionic halides, being highly soluble in water, the hydrated magnesium chloride can be extracted from brine or sea water. In North America, magnesium chloride is produced primarily from Great Salt Lake brine and it is extracted in a similar process from the Dead Sea in the Jordan valley. Magnesium chloride, as the natural mineral bischofite, is extracted out of ancient seabeds, for example. Some magnesium chloride is made from solar evaporation of seawater, anhydrous magnesium chloride is the principal precursor to magnesium metal, which is produced on a large scale. Hydrated magnesium chloride is the form most readily available, MgCl2 crystallizes in the cadmium chloride motif, which features octahedral Mg. A variety of hydrates are known with the formula MgCl2x, and each loses water with increasing temperature, in the hexahydrate, the Mg2+ remains octahedral, but is coordinated to six water ligands. The thermal dehydration of the hydrates MgCl2x does not occur straightforwardly, as suggested by the existence of some hydrates, anhydrous MgCl2 is a Lewis acid, although a very weak one. In most of its derivatives, MgCl2 forms octahedral complexes, derivatives with tetrahedral Mg2+ are less common. Examples include salts of 2MgCl4 and adducts such as MgCl, Magnesium chloride is most commonly used for dust control and road stabilization. Its second-most common use is ice control, mixed with hydrated magnesium oxide, magnesium chloride forms a hard material called Sorel cement. This compound is used in fire extinguishers, obtained by the reaction of magnesium hydroxide. Magnesium chloride also is used in medical and topical applications. It can also be used as an anesthetic for cephalopods, some species of crustaceans. MgCl2 is also utilized in the polymerase chain reaction. The magnesium ion is necessary for both in vivo/vitro DNA synthesis, Magnesium chloride is one of many substances used for dust control, soil stabilization and wind erosion mitigation. When magnesium chloride is applied to roads and bare soil areas, the use of magnesium chloride on roads remains controversial. It reduces foreign sediment in nearby waters, helps prevent stunted crop growth caused by clogged pores in plants
2.
Bavaria
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Bavaria is a free state and one of 16 federal states of Germany. Located in the German southeast with an area of 70,548 square kilometres and its territory comprises roughly a fifth of the total land area of Germany, and, with 12.9 million inhabitants, it is Germanys second most populous state. Munich, Bavarias capital and largest city, is the third largest city in Germany, the Duchy of Bavaria dates back to the year 555. In the 17th century CE, the Duke of Bavaria became a Prince-elector of the Holy Roman Empire, the Kingdom of Bavaria existed from 1806 to 1918, when Bavaria became a republic. In 1946, the Free State of Bavaria re-organised itself on democratic lines after the Second World War, Bavaria has a unique culture, largely because of the states Catholic majority and conservative traditions. Bavarians have traditionally been proud of their culture, which includes such as Oktoberfest. The state also has the second largest economy among the German states by GDP figures, modern Bavaria also includes parts of the historical regions of Franconia, Upper Palatinate and Swabia. The Bavarians emerged in a north of the Alps, previously inhabited by Celts. The Bavarians spoke Old High German but, unlike other Germanic groups, rather, they seem to have coalesced out of other groups left behind by Roman withdrawal late in the 5th century. These peoples may have included the Celtic Boii, some remaining Romans, Marcomanni, Allemanni, Quadi, Thuringians, Goths, Scirians, Rugians, the name Bavarian means Men of Baia which may indicate Bohemia, the homeland of the Celtic Boii and later of the Marcomanni. They first appear in written sources circa 520, a 17th century Jewish chronicler David Solomon Ganz, citing Cyriacus Spangenberg, claimed that the diocese was named after an ancient Bohemian king, Boiia, in the 14th century BCE. From about 554 to 788, the house of Agilolfing ruled the Duchy of Bavaria and their daughter, Theodelinde, became Queen of the Lombards in northern Italy and Garibald was forced to flee to her when he fell out with his Frankish overlords. Garibalds successor, Tassilo I, tried unsuccessfully to hold the frontier against the expansion of Slavs. Tassilos son Garibald II seems to have achieved a balance of power between 610 and 616, after Garibald II little is known of the Bavarians until Duke Theodo I, whose reign may have begun as early as 680. From 696 onwards he invited churchmen from the west to organize churches and his son, Theudebert, led a decisive Bavarian campaign to intervene in a succession dispute in the Lombard Kingdom in 714, and married his sister Guntrud to the Lombard King Liutprand. At Theodos death the duchy was divided among his sons, at Hugberts death the duchy passed to a distant relative named Odilo, from neighbouring Alemannia. He was defeated near Augsburg in 743 but continued to rule until his death in 748, saint Boniface completed the peoples conversion to Christianity in the early 8th century. Bavaria was in ways affected by the Protestant Reformation in the 16th century
3.
Prehistory
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Prehistory means literally before history, from the Latin word for before, præ, and Greek ιστορία. Neighbouring civilisations were the first to follow, most other civilisations reached the end of prehistory during the Iron Age. The period when a culture is written about by others, but has not developed its own writing is known as the protohistory of the culture. By definition, there are no records from human prehistory. Clear techniques for dating were not well-developed until the 19th century and this article is concerned with human prehistory as defined here above. There are separate articles for the history of the Earth. However, for the race as a whole, prehistory ends when recorded history begins with the accounts of the ancient world around the 4th millennium BC. For example, in Egypt it is accepted that prehistory ended around 3200 BC, whereas in New Guinea the end of the prehistoric era is set much more recently. The three-age system is the periodization of prehistory into three consecutive time periods, named for their respective predominant tool-making technologies, Stone Age Bronze Age Iron Age. The notion of prehistory began to surface during the Enlightenment in the work of antiquarians who used the word primitive to describe societies that existed before written records, the first use of the word prehistory in English, however, occurred in the Foreign Quarterly Review in 1836. The main source for prehistory is archaeology, but some scholars are beginning to more use of evidence from the natural and social sciences. This view has been articulated by advocates of deep history, human population geneticists and historical linguists are also providing valuable insight for these questions. Human prehistory differs from history not only in terms of its chronology, restricted to material processes, remains and artifacts rather than written records, prehistory is anonymous. Because of this, reference terms that use, such as Neanderthal or Iron Age are modern labels with definitions sometimes subject to debate. Palaeolithic means Old Stone Age, and begins with the first use of stone tools, the Paleolithic is the earliest period of the Stone Age. The early part of the Palaeolithic is called the Lower Palaeolithic, evidence of control of fire by early humans during the Lower Palaeolithic Era is uncertain and has at best limited scholarly support. The most widely accepted claim is that H. erectus or H. ergaster made fires between 790,000 and 690,000 BP in a site at Bnot Yaakov Bridge, Israel. The use of fire enabled early humans to cook food, provide warmth, Early Homo sapiens originated some 200,000 years ago, ushering in the Middle Palaeolithic
4.
Recorded history
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Recorded history or written history is a historical narrative based on a written record or other documented communication. Recorded history can be contrasted with other narratives of the past, for broader world history, recorded history begins with the accounts of the ancient world around the 4th millennium BC, and coincides with the invention of writing. Examples of written texts, however, can be found dating as far back as 1750 BCE in Ancient Mesopotamia, for some geographic regions or cultures, written history is limited to a relatively recent period in human history because of the limited use of written records. Because of these limits, recorded history in different contexts may refer to different periods of time depending on the historical topic. The question of the nature, and even the possibility, of a method for interpreting recorded history is raised in the philosophy of history as a question of epistemology. Prehistory traditionally refers to the span of time before recorded history, prehistory refers to the past in an area where no written records exist, or where the writing of a culture is not understood. Protohistory refers to the period between prehistory and history, after the advent of literacy in a society but before the writings of the first historians. Protohistory may also refer to the period during which a culture or civilization has not yet developed writing, more complete writing systems were preceded by proto-writing. Early examples are the Jiahu symbols, Vinča signs, early Indus script, earliest recorded history, which varies greatly in quality and reliability, deals with Pharaohs and their reigns, made by ancient Egyptians. Much of the earliest recorded history was re-discovered relatively recently due to archaeological dig sites findings, since these initial accounts, a number of different traditions have developed in different parts of the world in how to handle the writing and production of historical accounts. In China, the earliest history was recorded in oracle bone script which was deciphered, the Zuo Zhuan, attributed to Zuo Qiuming in the 5th century BCE, is the earliest written of narrative history in the world and covers the period from 722 to 468 BCE. The Classic of History is one of the Five Classics of Chinese classic texts and it is traditionally attributed to Confucius. Zhan Guo Ce was a renowned ancient Chinese historical compilation of materials on the Warring States period compiled between the 3rd and 1st centuries BCE. Sima Qian was the first in China to lay the groundwork for professional historical writing and his written work was the Shiji, a monumental lifelong achievement in literature. His work influenced every subsequent author of history in China, including the prestigious Ban family of the Eastern Han Dynasty era, Herodotus of Halicarnassus has generally been acclaimed as the father of history composing his The Histories written from 450s to the 420s BCE. However, his contemporary Thucydides is credited with having first approached history with a historical method in his work the History of the Peloponnesian War. Thucydides, unlike Herodotus, regarded history as being the product of the choices and actions of human beings, saint Augustine was influential in Christian and Western thought at the beginning of the medieval period. Through the Medieval and Renaissance periods, history was studied through a sacred or religious perspective
5.
Trade route
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A trade route is a logistical network identified as a of pathways and stoppages used for the commercial transport of cargo. The term can also be used to refer to trade over bodies of water, among notable trade routes was the Amber Road, which served as a dependable network for long-distance trade. Maritime trade along the Spice Route became prominent during the Middle Ages, during the Middle Ages, organizations such as the Hanseatic League, aimed at protecting interests of the merchants, and trade became increasingly prominent. In modern times, commercial activity shifted from the trade routes of the Old World to newer routes between modern nation-states. Innovative transportation of modern times includes pipeline transport and the relatively well-known trade involving rail routes, automobiles, one of the vital instruments which facilitated long distance trade was portage and the domestication of beasts of burden. Organized caravans, visible by the 2nd millennium BCE, could carry goods across a distance as fodder was mostly available along the way. The domestication of camels allowed Arabian nomads to control the long distance trade in spices, caravans were useful in long-distance trade largely for carrying luxury goods, the transportation of cheaper goods across large distances was not profitable for caravan operators. With productive developments in iron and bronze technologies, newer trade routes—dispensing innovations of civilizations—began to rise, evidence of maritime trade between civilizations dates back at least 90 millennia. Navigation was known in Sumer between the 4th and the 3rd millennium BCE, and was known by the Indians. The Egyptians had trade routes through the Red Sea, importing spices from the Land of Punt, maritime trade began with safer coastal trade and evolved with the manipulation of the monsoon winds, soon resulting in trade crossing boundaries such as the Arabian Sea and the Bay of Bengal. South Asia had multiple maritime trade routes which connected it to Southeast Asia, Indian connections to various Southeast Asian states buffered it from blockages on other routes. By making use of the trade routes, bulk commodity trade became possible for the Romans in the 2nd century BCE. A Roman trading vessel could span the Mediterranean in a month at one-sixtieth the cost of over-land routes, the peninsula of Anatolia lay on the commercial land routes to Europe from Asia as well as the sea route from the Mediterranean to the Black Sea. Records from the 19th century BCE attest to the existence of an Assyrian merchant colony at Kanesh in Cappadocia, trading networks of the Old World included the Grand Trunk Road of India and the Incense Road of Arabia. Parts of the Mediterranean world, Roman Britain, Tigris-Euphrates river system, beyond this was a margin which included not only temperate areas such as Europe, but the dry steppe corridor of central Asia. This was truly a world system, even though it occupied only a portion of the western Old World. Whilst each civilization emphasized its ideological autonomy, all were part of a common world of interacting components. These routes - spreading religion, trade and technology - have historically been vital to the growth of urban civilization
6.
Salt
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Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams of solids per litre, Salt is essential for life in general, and saltiness is one of the basic human tastes. The tissues of animals contain larger quantities of salt than do plant tissues, Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, the scarcity and universal need for salt has led nations to go to war over it and use it to raise tax revenues. Salt is used in ceremonies and has other cultural significance. Salt is processed from salt mines, or by the evaporation of seawater or mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine, and is used in industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp. Of the annual production of around two hundred million tonnes of salt, only about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use, edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, sodium is an essential nutrient for human health via its role as an electrolyte and osmotic solute. Excessive salt consumption can increase the risk of diseases, such as hypertension, in children. Such health effects of salt have long been studied, accordingly, numerous world health associations and experts in developed countries recommend reducing consumption of popular salty foods. The World Health Organization recommends that adults should consume less than 2,000 mg of sodium, humans have always tended to build communities either around sources of salt, or where they can trade for it. All through history the availability of salt has been pivotal to civilization, the word salary comes from the Latin word for salt because the Roman Legions were sometimes paid in salt. The Natron Valley was a key region that supported the Egyptian Empire to its north, because it supplied it with a kind of salt that came to be called by its name, natron. Even before this, what is now thought to have been the first city in Europe is Solnitsata, in Bulgaria, even the name Solnisata means salt works. A very ancient salt-works operation has been discovered at the Poiana Slatinei archaeological site next to a spring in Lunca, Neamț County
7.
Bronze Age
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The Bronze Age is a historical period characterized by the use of bronze, proto-writing, and other early features of urban civilization. The Bronze Age is the principal period of the three-age Stone-Bronze-Iron system, as proposed in modern times by Christian Jürgensen Thomsen. An ancient civilization is defined to be in the Bronze Age either by smelting its own copper and alloying with tin, arsenic, or other metals, or by trading for bronze from production areas elsewhere. Copper-tin ores are rare, as reflected in the fact there were no tin bronzes in Western Asia before trading in bronze began in the third millennium BC. Worldwide, the Bronze Age generally followed the Neolithic period, with the Chalcolithic serving as a transition, although the Iron Age generally followed the Bronze Age, in some areas, the Iron Age intruded directly on the Neolithic. Bronze Age cultures differed in their development of the first writing, according to archaeological evidence, cultures in Mesopotamia and Egypt developed the earliest viable writing systems. The overall period is characterized by use of bronze, though the place and time of the introduction. Human-made tin bronze technology requires set production techniques, tin must be mined and smelted separately, then added to molten copper to make bronze alloy. The Bronze Age was a time of use of metals. The dating of the foil has been disputed, the Bronze Age in the ancient Near East began with the rise of Sumer in the 4th millennium BC. Societies in the region laid the foundations for astronomy and mathematics, the usual tripartite division into an Early, Middle and Late Bronze Age is not used. Instead, a division based on art-historical and historical characteristics is more common. The cities of the Ancient Near East housed several tens of thousands of people, ur in the Middle Bronze Age and Babylon in the Late Bronze Age similarly had large populations. The earliest mention of Babylonia appears on a tablet from the reign of Sargon of Akkad in the 23rd century BC, the Amorite dynasty established the city-state of Babylon in the 19th century BC. Over 100 years later, it took over the other city-states. Babylonia adopted the written Semitic Akkadian language for official use, by that time, the Sumerian language was no longer spoken, but was still in religious use. Elam was an ancient civilization located to the east of Mesopotamia, in the Old Elamite period, Elam consisted of kingdoms on the Iranian plateau, centered in Anshan, and from the mid-2nd millennium BC, it was centered in Susa in the Khuzestan lowlands. Its culture played a role in the Gutian Empire and especially during the Achaemenid dynasty that succeeded it
8.
2nd millennium BC
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The 2nd millennium BC spans the years 2000 through 1000 BC. It marks the transition from the Middle to the Late Bronze Age and its first half is dominated by the Middle Kingdom of Egypt and Babylonia. Indo-Iranian migration onto the Iranian plateau and onto the Indian subcontinent propagates the use of the chariot, chariot warfare and population movements lead to violent changes at the center of the millennium, a new order emerges with Greek dominance of the Aegean and the rise of the Hittite Empire. The end of the sees the transition to the Iron Age. World population begins to rise steadily, reaching some 50 million towards 1000 BC, the Pharaohs of the Middle Kingdom of Egypt and their contemporary Kings of Babylon, of Amorite origin, brought good governance without much tyranny, and favoured elegant art and architecture. Farther east, the Indus Valley civilization was in a period of decline, possibly as a result of intense, Egypt and Babylonias military tactics were still based on foot soldiers transporting their equipment on donkeys. Combined with an economy and difficulty in maintaining order, this was a fragile situation that crumbled under the pressure of external forces they could not oppose. About a century before the middle of the millennium, bands of Indo-European invaders came from the Central Asian plains and swept through Western Asia and they were riding fast two-wheeled chariots powered by horses, a system of weaponry developed earlier in the context of plains warfare. This tool of war was unknown among the classical civilizations, Egypt and Babylonias foot soldiers were unable to defend against the invaders, in 1630 BC, the Hyksos swept into the Nile Delta, and in 1595 BC, the Hittites swept into Mesopotamia. The peoples in place were quick to adapt to the new tactics, among the great states of the time, only Babylon refrained from taking part in battles, mainly due to its new position as the worlds religious and intellectual capital. Also contributing to the changes were the Sea Peoples, ship-faring raiders of the Mediterranean, the civilizations, kingdoms and dynasties in this section are organized according to the United Nations geoscheme The events in this section are organized according to the United Nations geoscheme. It is difficult to pinpoint the year or even the correct century for many events of the 2nd Millennium BC. c.1700 BC–1300 BC—Palace complex in Knossos. C.1600 BC–1360 BC Egyptian domination over Canaan and Syria, in the history of the Egyptian language, the early 2nd millennium saw a transition from Old Egyptian to Middle Egyptian. As the most used form of the Ancient Egyptian language. The earliest attested Indo-European language, the Hittite language, first appears in cuneiform in the 16th century BC, Hittite is the best known and the most studied language of the extinct Anatolian branch of Indo-European languages. The first Northwest Semitic language, Ugaritic, is attested in the 14th century BC, the first fully phonemic script Proto-Canaanite developed from Egyptian hieroglyphs, becoming the Phoenician alphabet by 1200 BC. Mycenaean Greek, the most ancient attested form of the Greek language, was used on the Greek mainland, Crete, the people in this section are organized according to the United Nations geoscheme The Canadian–American speculative fiction author S. M. Stirling has written a set in Bronze Age era, circa the 1250s BC
9.
Transhumance
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Transhumance is a type of nomadism or pastoralism, a seasonal movement of people with their livestock between fixed summer and winter pastures. In montane regions, it implies movement between higher pastures in summer and lower valleys in winter, herders have a permanent home, typically in valleys. Generally only the travel, with a certain number of people necessary to tend them. In contrast, horizontal transhumance is more susceptible to being disrupted by climatic, economic or political change, traditional or fixed transhumance occurs or has occurred throughout the inhabited world, particularly Europe and western Asia. It is often of importance to pastoralist societies, as the dairy products of transhumance flocks. In many languages there are words for the summer pastures. The term transhumance is also used in correlation with nomadic pastoralism – the regular migration of people. The word transhumance comes from French and derives from the Latin words trans across, transhumance developed on every inhabited continent. Although there are cultural and technological variations, the underlying practices for taking advantage of remote seasonal pastures are similar. Transhumance is a form of pastoralism or nomadism, in the Balkans, the Sarakatsani, Aromanian and Yörük peoples traditionally spent summer months in the mountains and returned to lower plains in the winter. When the area was part of the Austro-Hungary and Ottoman empires, in summer, some groups went as far north as the Balkan Mountains, and they would spend the winter on warmer plains in the vicinity of the Aegean Sea. The Morlach were a population of Vlach shepherds who lived in the Dinaric Alps, but as national states appeared in the area of the former Ottoman Empire, new state borders were developed that divided the summer and winter habitats of many of the pastoral groups. These prevented easy movement across borders, particularly at times of war, in most parts of Wales, farm workers and sometimes the farmer would spend the summer months at a hillside summer house, or hafod, where the livestock would graze. During the late autumn the farm family and workers would drive the flocks down to the valleys, both Hafod and Hendref survive in Wales as place names and house names. Today, cattle and sheep that summer on many farms are still transported to lowland winter pastures. In many hilly and mountainous areas of Scotland, agricultural workers spent summer months in bothies or shielings, major drovers roads in the eastern part of Scotland include the Cairnamounth, Elsick Mounth and Causey Mounth. This practice has died out, but was practised within living memory in the Hebridean Islands. Today much transhumance is carried out by truck, with upland flocks being transported under agistment to lower-lying pasture during winter, in southern England, where the climate is mild and the hills low, transhumance historically took the opposite form to more mountainous areas
10.
Liguria
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Liguria is a coastal region of north-western Italy, its capital is Genoa. The region is popular with tourists for its beaches, towns, Liguria is bordered by France to the west, Piedmont to the north, and Emilia-Romagna and Tuscany to the east. It lies on the Ligurian Sea, the narrow strip of land is bordered by the sea, the Alps and the Apennines mountains. Some mountains rise above 2,000 m, the line runs at an average altitude of about 1,000 m. The highest point of the region is the summit of Monte Saccarello, the winding arched extension goes from Ventimiglia to La Spezia. Of this,3,524.08 km2 are mountainous and 891.95 km2 are hills, Ligurias natural reserves cover 12% of the entire region, or 600 km2 of land. They are made up of one national reserve, six large parks, the continental shelf is very narrow, and so steep it descends almost immediately to considerable marine depths along its 350-kilometre coastline. Except for the Portovenere and Portofino promontories, it is not very jagged. At the mouths of the biggest watercourses there are small beaches, the ring of hills lying immediately beyond the coast together with the sea account for a mild climate year-round. Average winter temperatures are 7 to 10 °C and summer temperatures are 23 to 24 °C, rainfall can be abundant at times, as mountains very close to the coast create an orographic effect. Genoa and La Spezia can see up to 2,000 mm of rain in a year, evidence of Neanderthals living in the area was discovered in the region of Loano, whereas in Ventimiglia, in the grotto of Balzi Rossi, numerous remains were found of Cro-Magnon. According to Classical sources, the Ligurians, once lived in a far broader territory than present-day Liguria, for example, the Greek colony of Massalia, modern Marseille was recorded to lie in Ligurian territory. During the first Punic War, the ancient Ligurians were divided, some of them siding with Carthage, under Augustus, Liguria was designated a region of Italy stretching from the coast to the banks of the Po River. The great Roman roads helped strengthen territorial unity and increase communication, important towns developed on the coast, of which evidence is left in the ruins of Albenga, Ventimiglia and Luni. Between the 4th and the 10th centuries Liguria was dominated by the Byzantines, the Lombards of King Rothari and it was also invaded by Saracen and Norman raiders. In the 10th century, once the danger of pirates decreased, in the 11th and 12th centuries the marches were split into fees, and then with the strengthening of the bishops’ power, the feudal structure began to partially weaken. The main Ligurian towns, especially on the coast, became city-states, inland, however, fiefs belonging to noble families survived for a very long time. Between the 11th century and the 15th century, the Republic of Genoa experienced a political and commercial success
