The Greek War of Independence from the Ottoman Empire began in 1821 and concluded with the winning of independence in 1830. With the support of England France and Russia a monarchy was established. A Bavarian prince Otto was named king in 1833. He was deposed 30 years later and the Great Powers chose a prince of the Danish House of Glucksberg as his successor. He became George I King of the Hellenes.
The Megali Idea (Great Idea) a vision of uniting all Greeks of the declining Ottoman Empire within the newly independent Greek State exerted strong influence on the early Greek state. At independence Greece had an area of 47 515 square kilometers (18 346 square mi.) and its northern boundary extended from the Gulf of Volos to the Gulf of Arta. The Ionian Islands were added in 1864; Thessaly and part of Epirus in 1881; Macedonia Crete Epirus and the Aegean Islands in 1913; Western Thrace in 1918; and the Dodecanese Islands in 1947.
Greece entered World War I in 1917 on the side of the Allies. After the war Greece took part in the Allied occupation of the Greek populated areas of Turkey. In 1921, with encouragement and supplies provided by the Great Powers, the Greek army attacked from its base in Smyrna (now Izmir) and marched toward Ankara. After an election in Greece that ended with a leader the British and French disliked and a concern that Greece would now become a major power in Europe, the Allies cut off any further supplies to the advancing Greek forces. Even though the Greek forces were on the verge of victory, with their lines of supply over-stretched and further supplies having been halted, the Greeks were forced to retreat. By the summer of 1922, the Turkish forces led by Mustafa Kemal (later Ataturk) went on the offensive and not only attacked Greek forces but slaughtered and committed numerous attrocities against innocent Greek women and children. Smyrna was sacked by the Turks and more than 1.3 million Greek refugees from Turkey poured into Greece creating enormous challenges for the Greek economy and society and effectively ending the Megali Idea.
Greek politics particularly between the two world wars involved a struggle for power between monarchists and republicans. Greece was proclaimed a republic in 1924 but George II returned to the throne in 1935 and a plebiscite in 1946 upheld the monarchy. It was finally abolished however by referendum on December 8 1974 when more than two-thirds of the voters supported the establishment of a republic.
Greece's entry into World War II was precipitated by the Italian invasion on October 28 1940. That date is celebrated in Greece by the one-word reply--ochi ("no")--symbolizing the Greek Prime Minister's rejection of the surrender demand made by Mussolini. Despite Italian superiority in numbers and equipment determined Greek defenders drove the invaders back into Albania. Hitler was forced to divert German troops to protect his southern flank and attacked Greece in early April 1941. By the end of May the Germans had overrun most of the country although Greek resistance was never entirely suppressed. German forces withdrew in October 1944 and the government in exile returned to Athens.
After the German withdrawal the principal Greek resistance movement which was controlled by the communists refused to disarm. A banned demonstration by resistance forces in Athens in December 1944 ended in violence and was followed by an intense house-to-house battle with Greek Government and British forces. After 3 weeks the communists were defeated and an unstable coalition government was formed. Continuing tensions led to the dissolution of that government and the outbreak of full-fledged civil war in 1946. First the United Kingdom and later the U.S. gave extensive military and economic aid to the Greek Government. Communist successes in 1947-48 enabled them to move freely over much of mainland Greece but with extensive reorganization and American material support the Greek National Army was slowly able to regain control over most of the countryside. Yugoslavia closed its borders to the insurgent forces in 1949 after Marshal Tito of Yugoslavia broke with Stalin and the Soviet Union.
In August 1949 the National Army under Marshal Alexander Papagos launched a final offensive that forced the remaining insurgents to surrender or flee across the northern border into the territory of Greece's communist neighbors. The insurgency resulted in 100 000 killed and caused catastrophic economic disruption. In addition at least 25 000 Greeks were either voluntarily or forcibly evacuated to Eastern Bloc countries while 700 000 became displaced persons inside the country.
After the 1944-49 Greek civil war Greece sought to join the Western republics and became a member of NATO in 1952. From 1952 to late 1963 Greece was governed by conservative parties -- the Greek Rally of Marshal Alexandros Papagos and its successor the National Radical Union (ERE) of Constantine Karamanlis. In 1963 the Center Union Party of George Papandreou was elected and governed until July 1965. It was followed by a succession of unstable coalition governments.
On April 21 1967 just before scheduled elections a group of colonels led by Col. George Papadopoulos seized power in a coup d'etat. Civil liberties were suppressed special military courts were established and political parties were dissolved. Several thousand political opponents were imprisoned or exiled to remote Greek islands. In November 1973 following an uprising of students at the Athens Polytechnic University Gen. Dimitrios Ioannides replaced Papadopoulos and tried to continue the dictatorship.
Gen. Ioannides' attempt in July 1974 to overthrow Archbishop Makarios the President of Cyprus brought Greece to the brink of war with Turkey which invaded Cyprus and occupied over 30% of the island. Senior Greek military officers then withdrew their support from the junta which toppled. Leading citizens persuaded Karamanlis to return from exile in France to establish a government of national unity until elections could be held. Karamanlis' newly organized party New Democracy (ND) won elections held in November 1974 and he became Prime Minister.
Following the 1974 referendum which resulted in the rejection of the monarchy a new constitution was approved by parliament on June 19 1975 and parliament elected Constantine Tsatsos as President of the republic. In the parliamentary elections of 1977 New Democracy again won a majority of seats. In May 1980 Prime Minister Karamanlis was elected to succeed Tsatsos as president. George Rallis was then chosen party leader and succeeded Karamanlis as Prime Minister.
On January 1 1981 Greece became the 10th member of the European Community (now the European Union). In parliamentary elections held on October 18 1981 Greece elected its first socialist government when the Panhellenic Socialist Movement (PASOK) led by Andreas Papandreou won 172 of 300 seats. On March 29 1985 after Prime Minister Papandreou declined to support President Karamanlis for a second term Supreme Court Justice Christos Sartzetakis was elected president by the Greek parliament.
Greece had two rounds of parliamentary elections in 1989; both produced weak coalition governments with limited mandates. Party leaders withdrew their support in February 1990 and elections were held on April 8. In the April 1990 election ND won 150 seats and subsequently gained 2 others. After Mitsotakis fired his first Foreign Minister--Andonis Samaras--in 1992 Samaras formed his own political party Political Spring. A split between Mitsotakis and Samaras led to the collapse of the ND government and new elections in September 1993.
On January 17 1996 following a protracted illness Prime Minister Papandreou resigned and was replaced as Prime Minister by former Minister of Industry Constantine Simitis. In elections held in September 1996 Constantine Simitis was elected Prime Minister. PASOK won 162 seats New Democracy 108.