LA. (hall)

Math

Sumerians divide circle into 360 degrees

3000 bc

Sumerians divide hour into 60 minutes

3000 bc

Sumerians divide hour into 60 minutes

3000 bc

Sumerians divide day into 24 hours

3000 bc

Egyptians use calendar with 365 days

2773 bc

War

Simple bows common in northern Europe

6000 bc

Sumer has fully articulated military, Standing army.

2700 bc

First detailed account of a war, between Lagash and Umma

2525 bc

Copper helmets with leather liners common in Sumerian army.

2500 bc

Battering ram developed to counter fortifications

2500 bc

Science

Sumerians use fillings in bad teeth

3000 bc

Pharaoh Atothis writes first book on human body (actually, ABOUT it, not ON it)

3000 bc

Chinese record sighting of comet

2296 bc

Water clock in Egypt

1600 bc

Sundials in Egypt

1500

Troy

Troy inhabited

3000 B.C.

Mycenae (Greece) flourishes

1600 bc

Mycenae dominates Aegean

1450 bc

Mycenae reaches its peak

1320 bc

Trojan War (between Troy and Mycenae)

1190 bc

Mycenae falls to invaders

1100 B.C.

Homer writing

750 BC