PLEASE HELPPP 3200 B. C. Sumerians settled in Mesopotamia
2686 B. C. - 1090 B. C. Ancient Egyptian civilization
1792 B. C. Hammurabi unites Mesopotamia
1290 B. C. Hebrew exodus from Egypt
1200 B. C. Iron Age begins
549 B. C. Persian Empire established

Write a short description of some symbols for each period from the timeline above

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.