Modern Greek in the context of "Acropolis of Athens"

Classical Athens, known contemporaneously simply as Athens (Ancient Greek: Ἀθῆναι, Athênai [atʰɛ̂ːnai̯]; Modern Greek: Αθήναι, Athine [aˈθine]), was the major urban centre of the notable polis (city-state) of the same name during the classical period (480–323 BC) of ancient Greece, located in Attica, Greece, leading the Delian League in the Peloponnesian War against Sparta and the Peloponnesian League. Athenian democracy was established in 508 BC under Cleisthenes following the tyranny of Isagoras. This system remained remarkably stable, and with a few brief interruptions, it remained in place for 180 years, until 322 BC (amid the aftermath of the Lamian War). The peak of Athenian hegemony was achieved during the Age of Pericles in the 440s and 430s BC.

In the classical period, Athens was a centre for the arts, learning, and philosophy, and it was the home of Plato's Academy and Aristotle's Lyceum. Athens was also the birthplace of Socrates, Plato, Pericles, Aristophanes, Sophocles, and many other prominent philosophers, writers, and politicians of the ancient world. It is widely referred to as the cradle of Western civilization and as the birthplace of democracy, largely due to the impact of its cultural and political achievements during the 5th and 4th centuries BC on the rest of the then-known European continent.

Polis (pl.: poleis) means 'city' in Ancient Greek. The ancient word polis had socio-political connotations not possessed by modern usage. For example, Modern Greek πόλη (póli), "city", is located within a χώρα (chóra), "country", which is a πατρίδα (patrída) or "native land" for its citizens. In ancient Greece, the polis was the native land; there was no other. It had a constitution and demanded the supreme loyalty of its citizens. Χώρα was only the countryside, not a country. Ancient Greece was not a sovereign country, but was territory occupied by Hellenes, people who claimed as their native language some dialect of Ancient Greek.

Poleis did not only exist within the area of the modern Republic of Greece. A collaborative study carried by the Copenhagen Polis Centre from 1993 to 2003 classified about 1,500 settlements of the Archaic and Classical ancient-Greek-speaking population as poleis. These ranged from the Caucasus to Southern Spain, and from Southern Russia to Northern Egypt, spread over the shores of the Mediterranean and Black Sea. They have been termed a network of micro-states. Many of the settlements still exist; e.g., Marseille, Syracuse, Alexandria, but they are no longer Greek or micro-states, belonging to other countries.

Greek (Modern Greek: ελληνικά, romanized: elliniká [eliniˈka] ; Ancient Greek: ἑλληνική, romanized: hellēnikḗ [helːɛːnikɛ́ː]) is an Indo-European language, constituting an independent Hellenic branch within the Indo-European language family. It is native to the territories that have had populations of Greeks since antiquity: Greece, Cyprus, Egypt, Italy (in Calabria and Salento), southern Albania, and other regions of the Balkans, Caucasus, the Black Sea coast, Asia Minor, and the Eastern Mediterranean. It has the longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary.

The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting importance in the European canon. Greek is also the language in which many of the foundational texts in science and philosophy were originally composed. The New Testament of the Christian Bible was also originally written in Greek. Together with the Latin texts and traditions of the Roman world, the Greek texts and Greek societies of antiquity constitute the objects of study of the discipline of Classics.

Katharevousa (Greek: Καθαρεύουσα, pronounced [kaθaˈrevusa], literally "purifying [language]") is a conservative form of the Modern Greek language conceived in the late 18th century as both a literary language and a compromise between Ancient Greek and the contemporary vernacular, Demotic Greek. Originally, it was widely used for both literary and official purposes, though sparingly in daily language. In the 20th century, it was increasingly adopted for official and formal purposes, until minister of education Georgios Rallis made Demotic Greek the official language of Greece in 1976, and in 1982 Prime Minister Andreas Papandreou abolished the polytonic system of writing for both Demotic and Katharevousa.

Katharevousa was conceived by the intellectual and revolutionary leader Adamantios Korais (1748–1833). A graduate of the University of Montpellier, Korais spent most of his life as an expatriate in Paris. As a classical scholar credited with both laying the foundations of Modern Greek literature and a major figure in the Greek Enlightenment, he was repelled by Byzantine influence on Greek society as well as that of its successors, and was a fierce critic of the clergy and their alleged subservience to the Ottoman Empire. He held that education was a prerequisite to Greek liberation.

Crete (/kriːt/ KREET; Greek: Κρήτη, Modern: Kríti [ˈkriti], Ancient: Krḗtē [krɛ̌ːtεː]) is the largest and most populous of the Greek islands, the 90th largest island in the world, and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica. Crete is located approximately 100 km (62 mi) south of the Peloponnese, and about 300 km (190 mi) southwest of Anatolia. Crete has an area of 8,450 km (3,260 sq mi) and a coastline of 1,046 km (650 mi). It bounds the southern border of the Aegean Sea, with the Sea of Crete (or North Cretan Sea) to the north and the Libyan Sea (or South Cretan Sea) to the south. Crete covers 260 km from west to east but is narrow from north to south, spanning three degrees of longitude but only half a degree of latitude.

Crete and its surrounding islands and islets form the Region of Crete (Greek: Περιφέρεια Κρήτης), which is the southernmost of the 13 top-level administrative units of Greece, and the fifth most populous of Greece's regions. Its capital and largest city is Heraklion, located on the island's north shore. As of 2021, the region had a population of 624,408. The Dodecanese are located to the northeast of Crete, while the Cyclades are situated to the north, separated by the Sea of Crete.

Euboea (/juːˈbiːə/ yoo-BEE-ə; Ancient Greek: Εὔβοια, romanized: Eúboia, IPA: [ěu̯boi̯a]), also known by its modern spelling Evia (/ˈɛviə/ EV-ee-ə; Modern Greek: Εύβοια, IPA: [ˈevi.a]), is the second-largest Greek island in area and population, after Crete, and the sixth largest island in the Mediterranean Sea. It is separated from Boeotia in mainland Greece by the narrow Euripus Strait (only 40 m (130 ft) at its narrowest point). In general outline it is a long and narrow island; it is about 180 km (110 mi) long, and varies in breadth from 50 km (31 mi) to 6 km (3.7 mi). Its geographic orientation is from northwest to southeast, and it is traversed throughout its length by a mountain range, which forms part of the chain that bounds Thessaly on the east, and is continued south of Euboia in the lofty islands of Andros, Tinos and Mykonos.

It forms most of the regional unit of Euboea, which also includes Skyros and a small area of the Greek mainland.

Corinth (/ˈkɒrɪnθ/ KORR-inth; Greek: Κόρινθος, romanized: Kórinthos, Modern Greek pronunciation: [ˈkorinθos]) is a municipality in Corinthia in Greece. The successor to the ancient city of Corinth, it is a former municipality in Corinthia, Peloponnese, which is located in south-central Greece. Since the 2011 local government reform, it has been part of the municipality of Corinth, of which it is the seat and a municipal unit. It is the capital of Corinthia.

It was founded as Nea Korinthos (Νέα Κόρινθος), or New Corinth, in 1858 after an earthquake destroyed the existing settlement of Corinth, which had developed in and around the site of the ancient city.