China By BikymanMK1 206 Han dynasty (221-206/207 B.C.) 221 Quin dynasty (221-206/207 B.C.) 476 476 BC - 221 BC Great wall of china was built source: http://www.travelchinaguide.com/china_great_wall/facts/who-built.htm Mar 7, 721 chain pump was invented Mar 7, 1700 Shang dynasty 1600-1100 B.C Mar 7, 1880 Gunpowder is invented Mar 7, 1885 pump was invented Mar 7, 1935 the wheel was invented 35000 bc
