Time Line By jerd1 1 CE Homo sapiens sapiens (AMHs) emerge in Africa 70,000 BP 2 Humans reach Australia 65,000 BP 3 Humans reach Europe 40,000 BP 4 Dogs first domesticated 27,000 to 40,000 BP 5 Humans reach North America 11,500 Bp 6 Wheat first domesticated 9,450 BP 7 Sumerian Cuniform invented 5,150 BP 8 The Great Pyramids of Giza built 4,500 Bp 9 Stonehenge built 4,450 BP 10 Quin Era Great Wall of China 2,171 BP 11 Start of Common Era 1949 BP 12 Ming Era Great Wall of China 582 BP 13 Columbus arrives in the New World 458 BP 14 United States Decleration signed 174 BP 15 Battle of Little Big Horn 74 BP 16 BP timescale Datum 0 BP