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.
Greece
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Greece, officially the Hellenic Republic, historically also known as Hellas, is a country in southeastern Europe, with a population of approximately 11 million as of 2015. Athens is the capital and largest city, followed by Thessaloniki. Greece is strategically located at the crossroads of Europe, Asia, situated on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, the Republic of Macedonia and Bulgaria to the north, and Turkey to the northeast. Greece consists of nine regions, Macedonia, Central Greece, the Peloponnese, Thessaly, Epirus, the Aegean Islands, Thrace, Crete. The Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, the Cretan Sea and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin and the 11th longest coastline in the world at 13,676 km in length, featuring a vast number of islands, eighty percent of Greece is mountainous, with Mount Olympus being the highest peak at 2,918 metres. From the eighth century BC, the Greeks were organised into various independent city-states, known as polis, which spanned the entire Mediterranean region and the Black Sea. Greece was annexed by Rome in the second century BC, becoming a part of the Roman Empire and its successor. The Greek Orthodox Church also shaped modern Greek identity and transmitted Greek traditions to the wider Orthodox World, falling under Ottoman dominion in the mid-15th century, the modern nation state of Greece emerged in 1830 following a war of independence. Greeces rich historical legacy is reflected by its 18 UNESCO World Heritage Sites, among the most in Europe, Greece is a democratic and developed country with an advanced high-income economy, a high quality of life, and a very high standard of living. A founding member of the United Nations, Greece was the member to join the European Communities and has been part of the Eurozone since 2001. Greeces unique cultural heritage, large industry, prominent shipping sector. It is the largest economy in the Balkans, where it is an important regional investor, the names for the nation of Greece and the Greek people differ from the names used in other languages, locations and cultures. The earliest evidence of the presence of human ancestors in the southern Balkans, dated to 270,000 BC, is to be found in the Petralona cave, all three stages of the stone age are represented in Greece, for example in the Franchthi Cave. Neolithic settlements in Greece, dating from the 7th millennium BC, are the oldest in Europe by several centuries and these civilizations possessed writing, the Minoans writing in an undeciphered script known as Linear A, and the Mycenaeans in Linear B, an early form of Greek. The Mycenaeans gradually absorbed the Minoans, but collapsed violently around 1200 BC and this ushered in a period known as the Greek Dark Ages, from which written records are absent. The end of the Dark Ages is traditionally dated to 776 BC, the Iliad and the Odyssey, the foundational texts of Western literature, are believed to have been composed by Homer in the 7th or 8th centuries BC. With the end of the Dark Ages, there emerged various kingdoms and city-states across the Greek peninsula, in 508 BC, Cleisthenes instituted the worlds first democratic system of government in Athens
3.
Administrative regions of Greece
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The administrative regions of Greece are the countrys thirteen first-level administrative entities, each comprising several second-level units, originally prefectures and, since 2011, regional units. The current regions were established in July 1986, by decision of then-Interior Minister Menios Koutsogiorgas as a second-level administrative entities, as part of a decentralization process inspired by then-Interior Minister Alekos Papadopoulos, they were accorded more powers in the 1997 Kapodistrias reform of local and regional government. They were transformed into separate entities by the 2010 Kallikratis Plan. In the 2011 changes, the general secretary was replaced with a popularly elected regional governor. Many powers of the prefectures, which were abolished or reformed into regional units, were transferred to the region level. The regional organs of the government were in turn replaced by seven decentralized administrations. Bordering the region of Central Macedonia there is one region, Mount Athos. It is located on the easternmost of the three large peninsulas jutting into the Aegean from the Chalcidice Peninsula, ISO 3166-2, GR Administrative divisions of Greece
4.
South Aegean
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The South Aegean is one of the thirteen regions of Greece. It consists of the Cyclades and Dodecanese island groups in the central, the South Aegean region was established in the 1987 administrative reform. With the 2010 Kallikratis plan, its powers and authority were redefined and extended, along with the Northern Aegean region, it is supervised by the Decentralized Administration of the Aegean based at Piraeus. The capital of the region is situated in Ermoupoli on the island of Syros, until the Kallikratis reform, the region consisted of the two prefectures of the Cyclades and the Dodecanese. Andros Ermoúpoli Ialysós Kallithéa Kálymnos Kárpathos Kos Léros Milos Mýkonos Náxos Páros Petaloúdes Ródos Santoríni or Thíra Official website
5.
Syros
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Syros, or Siros or Syra is a Greek island in the Cyclades, in the Aegean Sea. It is located 78 nautical miles south-east of Athens, the area of the island is 83.6 km2 and it has 21,507 inhabitants. The largest towns are Ermoupoli, Ano Syros, and Vari, Ermoupoli is the capital of the island and of the Cyclades. It has always been a significant port town, and during the 19th century it was more significant than Piraeus. Other villages are Galissas, Foinikas, Pagos, Manna, Kini, Syros also refers to USS LST-325, which is an American made World War II-era tank landing ship that was sent to Greece on 1 September 1964, as part of the grant-in-aid program. She served in the Hellenic Navy as RHS Syros from 1964 to 1999 and it is now decommissioned and docked in Evansville, Indiana. Ermoupoli stands on a naturally amphitheatrical site, with buildings, old mansions. The City Hall, where Miaoulis Square lies ringed with cafes, the City of Hermes has numerous churches, including Metamorphosis, Koimisis, St. Demetrius, Three Hierarchs, Anastasis, Evangelistria and St. Nicolas. The Archaeological Museum has many finds and the Municipal Library contains numerous editions, the quarter of the town known as Vaporia is where the sea captains lived. Along its narrow streets, stand numerous neo-classical mansions, Ano Syros is the second town of Syros and was built by the Venetians at the beginning of the 13th century on the hill of San Giorgio, north-west of Hermoupolis. Ano Syros maintains a medieval atmosphere, innumerable steps between narrow streets and houses with coloured doors lead to the top of the town. The medieval settlement of Ano Syros is accessible by car, the town is served mostly by marble steps, the distance from the harbour up to the main entry point of the town is approximately 1000 metres. The Catholic cathedral of Saint George dominates Ano Syros, the cathedral church was constructed during the 13th century. From the cathedral visitors have a view of the neighbouring islands of Tinos, Delos, Mykonos, Paros, Andros and Naxos. The history of settlement on Syros goes back at least 5,000 years and this is when the hill-top settlement of Kastri began. Archaeologists describe Early Cycladic III culture as Kastri culture, Kastri, dated by archaeologists to 2800-2300 BC, was one of the earliest settlements in Greece that were protected by stone walls with rounded bastions. Also the cemetery of Chalandriani is associated with Kastri, inside the fortification, the houses shared party walls and were packed close together. It is estimated that the town was home to up to 300 people
6.
Administrative divisions of Greece
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Following the implementation on 1 January 2011 of the Kallikratis Plan, the administrative divisions of Greece consist of two main levels, the regions and the municipalities. In addition, a number of decentralized administrations overseeing the regions exist as part of the Ministry of the Interior, the old prefectures were either abolished and split up or transformed into regional units in 2011. The Autonomous Monastic State of the Holy Mountain is an autonomous self-governing entity, the first level of government is constituted by the municipalities, which have resulted from merging several former municipalities and communities. They are run by a mayor and a council, elected every 5 years. The municipalities are subdivided into municipal units and finally into communities. Although communities have their own councils, their role is purely advisory to the municipal-level government, the second level is composed of the regions, run by a regional governor and a regional council, popularly elected every 5 years. The regions are divided into units, usually but not always coterminous with the former prefectures. Each regional unit is headed by a governor, drawn from the same political block as the regional governor. The former system of 13 regions,54 prefectures and 1033 municipalities and communities was replaced by 7 decentralized administrations,13 regions and 325 municipalities, the first elections to Greek local government areas were held between 7 November and 14 November 2010
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