The 20th century BC was a century that lasted from the year 2000 BC to 1901 BC. The world in the 20th century BC. Map of the world in 2000 BC. Events. The pyramid ruin of Amenemhet I at Lisht. He was the founder of the Twelfth Dynasty of Egypt. c. 2000 BC: Farmers and ...

During the 40th century BC, the Eastern Mediterranean region was 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.