2nd millennium BC
The 2nd millennium BC spanned the years 2000 BC to 1001 BC. In the Ancient Near East, it marks the transition from the Middle to the Late Bronze Age. The Ancient Near Eastern cultures are well within the historical era: The first half of the millennium is dominated by the Middle Kingdom of Egypt and Babylonia. The alphabet develops. At the center of the millennium, a new order emerges with Mycenaean Greek dominance of the Aegean and the rise of the Hittite Empire. The end of the millennium sees the Bronze Age collapse and the transition to the Iron Age.
Other regions of the world are still in the prehistoric period. In Europe, the Beaker culture introduces the Bronze Age, presumably associated with Indo-European expansion. The Indo-Iranian expansion reaches the Iranian plateau and onto the Indian subcontinent (Vedic India), propagating the use of the chariot. Mesoamerica enters the Pre-Classic (Olmec) period. North America is in the late Archaic stage. In Maritime Southeast Asia, the Austronesian expansion reaches Micronesia. In Sub-Saharan Africa, the Bantu expansion begins.
World population rose steadily, possibly surpassing the 100 million mark for the first time.[1]
Europe is still entirely within the prehistoric era; much of Europe enters the Bronze Age early in the 2nd millennium.
The desiccation of the Sahara is complete. Neolithisation of Sub-Saharan Africa is initiated via expansion from the dried Sahara, reaching West and East Africa. Later in the 2nd millennium, pastoralism and iron metallurgy spread to Central Africa via the Bantu migration.