What idea did Columbus's voyage prove wrong? A The Earth is round.
B The Earth is flat.
C the Earth is the center of the universe.
D The Earth revolves around the Sun.

What was unification difficult to accomplish in both germany and italy? a.) weaker states we’re attacked by stronger states for control of the emerging nations. b.) major european powers fought to keep independent states under their control. c.) germans and italians did not share common histories and languages.