1.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
France
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France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans 643,801 square kilometres and had a population of almost 67 million people as of January 2017. It is a unitary republic with the capital in Paris. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse, during the Iron Age, what is now metropolitan France was inhabited by the Gauls, a Celtic people. The area was annexed in 51 BC by Rome, which held Gaul until 486, France emerged as a major European power in the Late Middle Ages, with its victory in the Hundred Years War strengthening state-building and political centralisation. During the Renaissance, French culture flourished and a colonial empire was established. The 16th century was dominated by civil wars between Catholics and Protestants. France became Europes dominant cultural, political, and military power under Louis XIV, in the 19th century Napoleon took power and established the First French Empire, whose subsequent Napoleonic Wars shaped the course of continental Europe. Following the collapse of the Empire, France endured a succession of governments culminating with the establishment of the French Third Republic in 1870. Following liberation in 1944, a Fourth Republic was established and later dissolved in the course of the Algerian War, the Fifth Republic, led by Charles de Gaulle, was formed in 1958 and remains to this day. Algeria and nearly all the colonies became independent in the 1960s with minimal controversy and typically retained close economic. France has long been a centre of art, science. It hosts Europes fourth-largest number of cultural UNESCO World Heritage Sites and receives around 83 million foreign tourists annually, France is a developed country with the worlds sixth-largest economy by nominal GDP and ninth-largest by purchasing power parity. In terms of household wealth, it ranks fourth in the world. France performs well in international rankings of education, health care, life expectancy, France remains a great power in the world, being one of the five permanent members of the United Nations Security Council with the power to veto and an official nuclear-weapon state. It is a member state of the European Union and the Eurozone. It is also a member of the Group of 7, North Atlantic Treaty Organization, Organisation for Economic Co-operation and Development, the World Trade Organization, originally applied to the whole Frankish Empire, the name France comes from the Latin Francia, or country of the Franks
3.
Regions of France
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France is divided into 18 administrative regions, including 13 metropolitan regions and 5 overseas regions. The current legal concept of region was adopted in 1982, the term région was officially created by the Law of Decentralisation, which also gave regions their legal status. The first direct elections for representatives took place on 16 March 1986. In 2016, the number of regions was reduced from 27 to 18 through amalgamation, in 2014, the French parliament passed a law reducing the number of metropolitan regions from 22 to 13 with effect from 1 January 2016. However, the region of Upper and Lower Normandy is simply called Normandy. Permanent names were to be proposed by the new regional councils by 1 July 2016, the legislation defining the new regions also allowed the Centre region to officially change its name to Centre-Val de Loire with effect from January 2015. Two regions, Auvergne-Rhône-Alpes and Bourgogne-Franche-Comté, opted to retain their interim names, between 1982 and 2015, there were 22 regions in Metropolitan France. Before 2011, there were four regions, in 2011 Mayotte became the fifth. Regions lack separate legislative authority and therefore cannot write their own statutory law and they levy their own taxes and, in return, receive a decreasing part of their budget from the central government, which gives them a portion of the taxes it levies. They also have considerable budgets managed by a council made up of representatives voted into office in regional elections. A regions primary responsibility is to build and furnish high schools, in March 2004, the French central government unveiled a controversial plan to transfer regulation of certain categories of non-teaching school staff to the regional authorities. Critics of this plan contended that tax revenue was insufficient to pay for the costs. In addition, regions have considerable power over infrastructural spending, e. g. education, public transit, universities and research. This has meant that the heads of regions such as Île-de-France or Rhône-Alpes can be high-profile positions. Number of regions controlled by each coalition since 1986, Overseas region is a recent designation, given to the overseas departments that have similar powers to those of the regions of metropolitan France. Radio France Internationale in English Overseas regions Ministère de lOutre-Mer some explanations about the past and current developments of DOMs and TOMs
4.
Centre-Val de Loire
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Centre-Val de Loire, French for Centre-Loire Valley), is one of the 18 administrative regions of France. It straddles the middle Loire Valley in the interior of the country, the administrative capital is Orléans, but the largest city is Tours. Like many contemporary regions of France, the region of Centre was created from parts of three provinces, Touraine, Orléanais, and Berry. Proposed names for the region included Val de Loire after the Loire Valley or Cœur de Loire, on 17 January 2015, as part of the reorganization of French regions, the regions official name was changed to Centre-Val de Loire. A new logo was also created and this ensures a mission of economic promotion, international support to regional companies and enhancement promotion of regional agrofood products via a regional signature, © du Centre
5.
Departments of France
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In the administrative divisions of France, the department is one of the three levels of government below the national level, between the administrative regions and the commune. There are 96 departments in metropolitan France and 5 overseas departments, each department is administered by an elected body called a departmental council. From 1800 to April 2015, they were called general councils, the departments were created in 1791 as a rational replacement of Ancien Régime provinces with a view to strengthen national unity, the title department is used to mean a part of a larger whole. Almost all of them were named after geographical features rather than after historical or cultural territories which could have their own loyalties. The earliest known suggestion of it is from 1764 in the writings of dArgenson and they have inspired similar divisions in many countries, some of them former French colonies. Most French departments are assigned a number, the Official Geographical Code. Some overseas departments have a three-digit number, the number is used, for example, in the postal code, and was until recently used for all vehicle registration plates. For example, inhabitants of Loiret might refer to their department as the 45 and this reform project has since been abandoned. The first French territorial departments were proposed in 1665 by Marc-René dArgenson to serve as administrative areas purely for the Ponts et Chaussées infrastructure administration, before the French Revolution, France gained territory gradually through the annexation of a mosaic of independent entities. By the close of the Ancien Régime, it was organised into provinces, during the period of the Revolution, these were dissolved, partly in order to weaken old loyalties. Their boundaries served two purposes, Boundaries were chosen to break up Frances historical regions in an attempt to erase cultural differences, Boundaries were set so that every settlement in the country was within a days ride of the capital of the department. This was a security measure, intended to keep the national territory under close control. This measure was directly inspired by the Great Terror, during which the government had lost control of rural areas far from any centre of government. The old nomenclature was carefully avoided in naming the new departments, most were named after an areas principal river or other physical features. Even Paris was in the department of Seine, the number of departments, initially 83, was increased to 130 by 1809 with the territorial gains of the Republic and of the First French Empire. Following Napoleons defeats in 1814-1815, the Congress of Vienna returned France to its pre-war size, in 1860, France acquired the County of Nice and Savoy, which led to the creation of three new departments. Two were added from the new Savoyard territory, while the department of Alpes-Maritimes was created from Nice, the 89 departments were given numbers based on their alphabetical order. The department of Bas-Rhin and parts of Meurthe, Moselle, Vosges and Haut-Rhin were ceded to the German Empire in 1871, following Frances defeat in the Franco-Prussian War
6.
Loir-et-Cher
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Loir-et-Cher is a department in the Centre-Val de Loire region, France. Its name is originated from two rivers which cross it, the Loir on the North and the Cher on the South, the INSEE and La Poste gave it the number 41. The department of Loir-et-Cher covers a territory which had a population during the prehistoric period. However, politically, the region remains quartered between the earldoms and the duchies neighbouring, in 1397, the House of Orleans becomes the possession of the Comté of Blois. In 1497, Louis d’Orleans was crowned with the name of Louis XII, it’s the beginning of the importance of Blois and of the Blaisois in the politic life of the French, impressive especially under the last Valois. After that, there were religion’s wars which were extremely ferocious under Charles IXs reign, in 1576 and 1588, the General Estates get together in Blois. L’Orléanais, le Berry, la Touraine, le Perche et le Maine occupied le Loir-et-Cher, the Loir-et-Cher’s birth as a department was very difficult and laborious. The 29th September 1789, the advisory board made a report in which he wanted to attribute one of the 80 departments to Blois. However, some cities and canton capitals disagreed, such as Tours, inside of the department, Montrichard turns to Amboise and Tours, Saint-Aignan wants to turn to the Berry and Salbris to Vierzon. Finally, Orleans gives Blois an important part of the Sologne except Beaugency, the department is founded 4 March 1790, in accordance with the law of 22 December 1789. It is constituted of some old provinces of the Orleanais and of the Touraine along with a Berry’s plot. The department’s constriction in its centre and the maximum stretching out in its surface area beyond the Loir on the North, after the victory of the Coalises during the Waterloo’s battle, the Prussian’s troops occupied the department from June 1815 to November 1818. The poet Pierre de Ronsard, the inventor Denis Papin and the historian Augustin Thierry come from over here, others well-known people attached also to this department, like François the First, Gaston d’Orleans, the Marshall Maunoury, and the abbot Gregoire. In the artistic domain, there is the compositor Antoine Boesset, musician in the Louis XII de France’s court, the Loir-et-Cher’s department is a part of the Centre Region. It is adjacent of these departments, the Eure-et-Loir, the Loiret, the Cher, the Indre, the Indre-et-Loire, due to its surface area of 6343 km², it is on the 31st national place in the size’s domain. It has a privileged geographical situation because it is in the center of the Centre region, an axe lively and dynamic, brings Blois closer of the both tall urban conglomerations near it, Orleans and Tours. Located on the boundaries of the Perche, the Beauce, the Sologne, cut in its middle by the Loire, it shows an image of balance and diversity. Loir-et-Cher is a part of the region of Centre-Val de Loire
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One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Vendôme". Encyclopædia Britannica. 27 (11th ed.). Cambridge University Press. p. 982.
One or more of the preceding sentences incorporates text from a publication now in the 
