1821 Tripolitsa, Greece, falls and 30,000 Turks are massacred.
1830 The sovereignty of Greece is confirmed in a London Protocol.
1832 The independence of Greece is recognized by the Treaty of London. Otto of Wittelsbach, Prince of Bavaria is chosen King.
1835 Otto is named the first modern King of Greece.
1863 Danish prince Wilhelm Georg is chosen as King George of Greece.
1878 Greece declares war on Turkey.
1881 Thessaly is freed and becomes part of Greece again.
1913 First Balkan War: During the Naval Battle of Lemnos, Greek admiral Pavlos Kountouriotis forces the Turkish fleet to retreat to its base within the Dardanelles, from which it did not venture for the rest of the war.
1917 Alexander I becomes king of Greece.
1920 Dimitrios Rallis forms a government in Greece.
1923 Greece becomes a republic.
1938 Bulgaria signs a non-aggression pact with Greece and other states of Balkan Antanti (Turkey, Romania, Yugoslavia).
1941 German troops execute the male population of the villages Kerdyllia in Serres, Greece and burn the houses down.
1947 Cold War: in an effort to fight the spread of Communism, U.S. President Harry S. Truman signs an act into law that will later be called the Truman Doctrine. The act grants $400 million in military and economic aid to Turkey and Greece, each battling an internal Communist movement.
1952 The women of Greece are given the right to vote.
1964 Constantine II becomes King of Greece.
1973 George Papadopoulos, head of the military Regime of the Colonels in Greece, is ousted in a hardliners' coup led by Brigadier General Dimitrios Ioannidis.
1981 The Republic of Greece is admitted into the European Community.
1995 The Democratic Social Movement is founded in Greece.
2002 Eastern Mediterranean Event. A near-Earth asteroid estimated at 10 metres diameter explodes over the Mediterranean Sea between Greece and Libya. The resulting explosion is estimated to have a force of 26 kilotons, slightly more powerful than the Nagasaki atomic bomb.