Original Article: "40th century BC" http://en.wikipedia.org/wiki/40th_century_BC
40th century BC
From Wikipedia, the free encyclopedia
During the 40th century BC, the Near East and southeastern Europe were in the Chalcolithic period (Copper Age), transitional between the Stone and the Bronze Ages. Northwestern Europe was in the Neolithic. China was dominated by the Neolithic Yangshao culture. The Americas were in a phase of transition between the Paleo-Indian (Lithic) to the Meso-Indian (Archaic) stage.