4th period Fereira/Gervais

Main

1766 BC - 1122 BC
1046 BC - 256 BC
480 BC - 221 BC
221 BC - 207 BC
206 BC - 220 AD

Inventions

2737 BC
2570 BC
2000 BC
2000 BC
1161 BC
1050 BC
105 AD
618 AD