a republic in SE Europe, occupying the S part of the Balkan Peninsula and many islands in the Ionian and Aegean Seas; site of two of Europe's earliest civilizations (the Minoan and Mycenaean); in the classical era divided into many small independent city-states, the most important being Athens and Sparta; part of the Roman and Byzantine Empires; passed under Turkish rule in the late Middle Ages; became an independent kingdom in 1827; taken over by a military junta (1967–74); the monarchy was abolished in 1973; became a republic in 1975; a member of the European Union. Official language: Greek. Official religion: Eastern (Greek) Orthodox. Currency: euro. Capital: Athens. Pop: 11 159 773 (2017 est). Area: 131 944 sq km (50 944 sq miles)