History
Background

 300 000 -100 000 AD 100 000-10 000 AD

Ancient world

 10 000-3 000 AD 3 000-1 000 AD 1 000 - 500 AD 500-1 AD 1-476 Medieavla world 476-1000 1000-1492 Modern world 1492-1648 1648-1789 1789-1870 1870-1918

Present world

 1918-1945 1945-1968 1968-1991 1991-2015 Future world 2015-2050 2050-2200 2200-.....
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