African Americans moved north to avoid slavery. They also moved north for more opportunity. <span />
The answer is Galileo, however, a scientist much earlier then Galaleo, named Anaxagoras also discover this. However, I believe credit is given to Galileo.
B. Colonies felt they no longer needed English troops, but the English wanted the colonies to pay for the war.
The Mesopotamians made many technological discoveries. They were the first to use the potter's wheel to make better pottery, they used irrigation to get water to their crops, they used bronze metal (and later iron metal) to make strong tools and weapons, and used looms to weave cloth from wool
