Important Inventions

Wheel

9500 BC - 4500 BC
4500 BC
4500 BC - 3300 BC
2200 BC - 1500 BC

Ships

10000 BC - 3000 BC
3000 BC - 1000 BC
2000 BC
1200 BC - 800 BC
340 BC
200 BC - 100 BC
1040 - 1117
1200 - 1300

Catapults

400 BC - 885
399 BC - 50 BC
300 BC - 886

Navigational instruments

150 BC
1295 - 1475