D. He discovered an important mathematical formula (pythagorean theorem, discovering the area of a right angled triangle using its side lengths.)
Answer:
Earth - was the center of the universe. Also with the earth moving around the sun then, sun around earth. but was forced by the church to recite his statement was false.
The primary problem was inflation
Answer:
During the Middle Ages, the Catholic Church exerted enormous power over Europe. The Church influenced governments, waged wars and levied taxes. Although some actions, such as the Medieval Inquisition, are controversial today, the Catholic Church also established universities and hospitals, instigated positive social change and paved the way for economic growth.
