article: 20th century BC
links: Sumer 1900 BC Jōmon period Nubia Stonehenge Kenya Crete Ancient China New Delhi Olmec Yamanashi Prefecture Bronze Age Egypt Mesoamerica Tokyo National Museum Mohenjo-Daro Nippur Japan 1556 BC 19th century BC Harappa National Museum of Pakistan 18th century BC Glass Minoan civilization Ethiopia Amorite Indus Valley civilization Ur Karachi Mantua Metropolitan Museum of Art Knossos China Toyama Prefecture Italy 21st century BC Xia Dynasty Farmers New York City Ancient Egypt Horse