Sumerians divide circle into 360 degrees
Sumerians divide day into 24 hours
Sumerians divide minute into 60 seconds
Crossbows common in China during Han dynasty
206 B.C. - 220 A.D.
Stone and wooden wheels widespread
Lyre in Sumeria
Advanced soldering skills in Mesopotamia
Assyrians: 150-200,000 in army, with combined
499 B.C. - 448 B.C.
Crop irrigation in Egypt
215 B.C. - 205 B.C.
Fired clay pottery
Paved highway in Egypt
Great Pyramid at Giza
First zoo has opening day, in China
Great Wall of China
Mycenae (Greece) flourishes
Mycenae dominates Aegean
Mycenae reaches its peak
Trojan War (between Troy and Mycenae)