Late Bronze Age collapse
The Late Bronze Age collapse was a time of widespread societal collapse during the 12th century BC associated with environmental change, mass migration, and the destruction of cities. The collapse affected a large area of the Eastern Mediterranean (North Africa and Southeast Europe) and the Near East, in particular Egypt, eastern Libya, the Balkans, the Aegean, Anatolia, and, to a lesser degree, the Caucasus. It was sudden, violent, and culturally disruptive for many Bronze Age civilizations, and it brought a sharp economic decline to regional powers, notably ushering in the Greek Dark Ages.
The palace economy of Mycenaean Greece, the Aegean region, and Anatolia that characterized the Late Bronze Age disintegrated, transforming into the small isolated village cultures of the Greek Dark Ages, which lasted from around 1100 to the beginning of the better-known Archaic age around 750 BC. The Hittite Empire of Anatolia and the Levant collapsed, while states such as the Middle Assyrian Empire in Mesopotamia and the New Kingdom of Egypt survived in weakened forms. Other cultures such as the Phoenicians enjoyed increased autonomy and power with the waning military presence of Egypt and Assyria in West Asia.
Competing theories of the cause of the Late Bronze Age collapse have been proposed since the 19th century, with most involving the violent destruction of cities and towns. These include volcanic eruptions, droughts, disease, invasions by the Sea Peoples or migrations of the Dorians, economic disruptions due to increased ironworking, and changes in military technology and strategy that brought the decline of chariot warfare. Earthquakes have also been proposed as causal, but recent research suggests that earthquakes were not as influential as previously believed.[1] Following the collapse, gradual changes in metallurgic technology led to the subsequent Iron Age across Eurasia and Africa during the 1st millennium BC.