Answer: Transformation in thinking that occurred in the 1500's and 1600's caused by scientific observation, experimentation, and questioning of traditional opinions. It changed the way Europeans looked at the world. What did the Greek astronomer Ptolemy believe? He believed the Earth was the center of the universe.
General Cornwallis was surrounded and forced to surrender the British position on Yorktown, Virginia. Two years later the Treaty of Paris made the American independence official