Prehistory and antiquity
The shores of Greece's Aegean Sea saw the emergence of the first civilizations in Europe, namely the Minoan and the Mycenaean. After this, a Dark Age followed until around 800 BC, when a new era of Greek city-states emerged establishing colonies along the Mediterranean, and the alphabet was adopted from the Phoenicians[citation needed]. Plato described how the Greeks live round the Aegean Archipelago "like frogs around a pond"; their name has always been associated with the sea.

Roman rule and Middle Ages
Militarily, Greece itself declined to the point that the Romans conquered the land (168 BC onwards), though, in many ways, Greek culture would in turn conquer Roman life. Greece became a province of the Roman Empire, but Greek culture continued to dominate the eastern Mediterranean. When the Roman Empire finally split in two, the Eastern Roman Empire, known as the Byzantine Empire, centered around Constantinople (known in ancient times as Byzantium), remained Greek in nature, encompassing Greece itself. From the 4th century to the 15th century, the Byzantine Empire survived eleven centuries of attacks from the north, west and east until Constantinople fell on May 29, 1453 to the Ottoman Empire, when Constantine XI, the last emperor of the Palaeologus dynasty, fell. Greece was gradually conquered by the Ottomans during the 15th century.

Ottoman Period

Theod.Vryzakis,The sortie of MessologhiWhile the Ottomans were completing the main conquest of the Greek Mainland, two Greek migrations occurred. The first migration saw the Greek intelligentsia migrate to Western Europe - especially to Italy - and contribute to the advent of the Renaissance. The second migration of Greeks left the plains of the Greek peninsula and resettled in the mountains, the islands and Greek regions outside Ottoman control. In the mountainous regions, the Ottomans were unable to create a permanent military and administrative presence. As a result some Greek mountain clans across the peninsula, as well as some islands, were able to maintain a status of independence. The Sphakiots of Crete, the Souliots from Souli of Epirus, and the Maniots from Mani of Peloponnesus were the most resilient mountain clans throughout the Ottoman Empire. By the end of the 16th century and until the 17th century, Greeks began to migrate back to the plains and cities, adding to the increasing urban population. The millet system contributed to the ethnic cohesion of Orthodox Greeks by segregating the various peoples within the Ottoman Empire based on religion. The Orthodox Church, a religious institution with a keen sense of its national character, contributed to the Greeks from all geographical areas of the peninsula (i.e. mountains, plains, and islands) to preserve their ethnic, cultural and linguistic heritage during the years of the Ottoman rule (although at the time it was not strictly speaking a "Greek" church - the Greek Church was instituted after the liberation). The Greeks who remained on the plains during Ottoman occupation were either Christians, who dealt with the burdens of foreign rule, or to a considerable extent Crypto-Christians (Greek Muslims who were secret practitioners of the Orthodox faith) in order to avoid heavy taxation. The Greeks who converted to Islam and were not Crypto-Christians became Turks in the eyes of Orthodox Greeks. Therefore, there was no recognition of "Greek Muslims", or of "Christian Turks". As a result, religion played an integral part in the formation of the Modern Greek and other post-Ottoman national identities.

Creation of the modern Greek state

Eugène Delacroix,Massacre at ChiosThe Ottomans ruled Greece until the early 19th century. In 1821, the Greeks rebelled and declared their independence, but did not succeed in winning it until 1829. The elites of powerful European nations saw the war of Greek independence, with its accounts of Turkish atrocities, in a romantic light (see, for example, the 1824 painting the Massacre of Chios by Eugène Delacroix). Scores of non-Greeks volunteered to fight for the cause — including people like Lord Byron. At times the Ottomans seemed on the verge of entirely suppressing the Greek revolution but were eventually forced to give in by the direct military intervention of France, Great Britain and Russia. This was the prelude of the so called "Eastern Question", the gradual dismemberment of the decaying empire by the western powers. The Russian ex-minister of foreign affairs, Ioannis Kapodistrias, himself a Greek noble from the Ionian Islands, was chosen as President of the new Republic following Greek independence. However, that republic was soon dissolved by the Great Powers which then installed a "Greek" monarchy. The Great Powers did not believe the Greeks were capable of governing themselves, and as such looked elsewhere for a prospective monarch. The first king, Otto of Bavaria, was of the German House of Wittelsbach, and the subsequent line was from the Germano-Danish House of Oldenburg. During the 19th and especially the early 20th centuries, in a series of wars with the Ottomans, Greece sought to enlarge its boundaries to include the ethnic Greek population of the Ottoman Empire (the Ionian Islands were donated by Britain upon the arrival of the new king from Denmark in 1863, and Thessaly was ceded by the Ottomans without a fight). Greece would slowly grow in territory and population until reaching its present configuration in 1947.

In World War I, Greece sided with the entente powers against the Ottoman Empire and the other Central Powers. In the war's aftermath, the Great Powers awarded a small part of Asia Minor to Greece, centered around the city of Smyrna (known as Izmir today) which had a large Greek population. At that time, however, the Turkish nationalists, led by Mustafa Kemal Atatürk, denounced the Sultan's government in Istanbul and organised a new one in Ankara. During the Greco-Turkish War (1919-1922) the Turks eventually defeated the Greek armies and regained control of Asia Minor. Soon afterwards, the Treaty of Lausanne was signed, fixing the borders to this date. A population exchange was included in the agreement and immediately afterwards, hundreds of thousands of Turks then living in mainland Greek territory left for Turkey in exchange for more than 1.22 million Greek residents of Asia Minor (excluding Constantinople, Imvros and Tenedos).

In 1936, General Ioannis Metaxas established an authoritarian conservative dictatorship in Greece, seen as similar to Antonio Salazar's "New State". Greece under Metaxas is also compared to Spain at the time, although it lacked the political violence associated with Francisco Franco's regime.

In 1940, the Italian dictator Mussolini launched a surprise attack on Greece. The Greek counter-attack along the Albanian front gave the Allies their first victory against the Axis forces. Eventually, Mussolini's armies were saved from defeat with the intervention of Italy's Axis ally, Germany, whose forces overran and occupied Greece in April-May 1941 and remained there until 1944, when the Greek resistence and British forces liberated the country.

Despite the country's numerically small and ill-equipped armed forces, Greece made an important contribution to the Allied efforts in World War II. At the start of the war Greece sided with the Allies and refused to give in to Italian demands (see Oxi Day). Italy invaded Greece on 28 October 1940, but Greek troops repelled the invaders after a bitter struggle (see Greco-Italian War). Hitler then reluctantly stepped in, primarily to secure his strategic southern flank. Troops from Germany, Hungary, Bulgaria, and Italy successfully invaded Greece, overcoming Greek, but also British, Australian, and New Zealand units within weeks.

To reduce the threat of a counter-offensive by Allied forces in Egypt, the Germans attempted to seize Crete in a massive attack by paratroops. Allied forces, along with Cretan civilians, however, offered fierce resistance. Although Crete eventually fell, it is pointed out by historians that this, and the whole Greek campaign, delayed German plans significantly, with the result that the German invasion of the Soviet Union started fatally close to winter.

During the years of Nazi occupation, hundreds of thousands of Greeks died in direct combat, in concentration camps, or of starvation. The occupiers murdered the greater part of the Jewish community despite efforts by the Greek Orthodox Church and many Christian Greeks to shelter its Jewish citizens. The Greek economy languished. After liberation, Greece experienced an equally bitter Greek Civil War between the communist-led Democratic Army and the Hellenic Army that lasted until 1949, when the communists were defeated in the battle of Grammos-Vitsi.

In the 1950s and 1960s, Greece continued to develop slowly with grants and loans through the Marshall Plan, and later through growth, notably in the tourism sector. In 1967, the Greek military seized power in a coup d'état and overthrew the conservative government of Panayiotis Kanellopoulos which had been preparing a general election set for May 28. The military established what became known as the Régime of the Colonels. However, the coup leaders were recognised internationally as the legitimate goverment after the, then, head of state, King Constantine, signed them in. In 1973, the régime abolished the Greek monarchy. In October 1973, George Papadopoulos appointed politician Spiros Markezinis as Prime Minister, with a mission undertake a transition to parliamentary democracy. Following the events of the Athens Polytechnic uprising, Papadopoulos and Markezinis were overthrown by a countercoup headed by junta hardliner Brigadier Ioannides on November 25, 1973. A new president, Phaedon Gizikis, and a new Prime Minister, Adamantios Androutsopoulos, were appointed.

Ioannides backed a Greek Cypriot military coup against President Makarios of Cyprus, which became a pretext for Turkey to intervene militarily under the Treaty of Guarantee in 1974 and occupied the north of the island, resulting in a crisis between Greece and Turkey. Escalation in Cyprus led to the implosion of the military régime who had proved itself militarily incapable of mobilising its forces. Ex-premier Konstantinos Karamanlis was invited from Paris as interim prime minister under President Gizikis. He later gained re-election for two further terms at the head of the conservative Nea Dimokratia party, which he founded. In 1975, following a referendum to confirm the deposition of King Constantine II, a democratic republican constitution came into force. Another previously exiled politician, Andreas Papandreou also returned and founded the socialist PASOK party, which won the elections in 1981 and dominated the country's political course for almost two decades.

With the restoration of democracy, the stability and economic prosperity of Greece have grown. Greece joined the European Union in 1981 and adopted the Euro as its currency in 2001. New infrastructure, funds from the EU and growing revenues from tourism, shipping, services, light industry, and the telecommunications industry have greatly raised the standard of living. Tensions continue to exist between Greece and Turkey over Cyprus and the delimitation of borders in the Aegean Sea, but relations have thawed considerably following successive earthquakes - first in Turkey and then in Greece - and an outpouring of sympathy and generous assistance by ordinary Greeks and Turks. This is in stark contrast to decades of hostility between these two countries, which saw repeated threats of war. Even though both were members of NATO, at times more than half of the entire Greek military was positioned against Turkey. Since 2000, Greece has become one of the chief advocates of Turkey's application to join the European Union.

The 2004 Summer Olympic Games were held in Athens, returning them to Greece for the first time since their modern inception in 1896. Despite widespread initial concerns over the city's ability to meet construction deadlines as well as over its ability to handle a potential terrorist threat, the Athens Games were widely praised by the IOC as the best to date.