When did saragossa come under muslim control

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

President eisenhowers foreign policy stressed peace, threatened massive retaliation for attacks and what

What role did mazzini play in italian unification? a.) he dreamed of a united italy and took the first steps to achieving it. b.) he conquered the southern part of italy, including sicily. c.) he was the first leader of a united italy. d.) he was assassinated by the french government, making him a martyr.