Govt/empires

Main

China

2207 bc - 1766 bc
1765 bc - 1027 bc
1121 BC - 515 BC
480 BC - 221 BC
221 bc - 206 bc
206 BC - 220
581 - 617
618 - 907
960 - 1127
1127 - 1279
1237 - 1480
1279 - 1368

Middle East

2600 BC - 1900 BC
2600 BC - 1900 BC
550 BC - 330 BC
322 BC - 185 BC
300 - 1453
320 - 550
661 - 750
750 - 1250
909 - 1171
1258 - 1335
1750 - 1830

Americas

1800 BC - 900
1400 - 1540
1400 - 1521

Europe

509 BC - 27 BC
278 - 476
780 - 900
962 - 1806

Africa

2686 BC - 2181 BC
2055 BC - 1650 BC
1550 BC - 1069 BC
830 - 1235
1240 - 1600