Answer:
Empress Wu a. made a significant contribution to the civil service examination system.
Explanation:
It affected their social lives, and there was very little trade between the two regions (the only ones around.) They also needed many people. They developed irrigation and drainage systems which caused many people to work.
Answer:
Asia
Explanation:
When the United States entered into WW2 the Japanese attacked the Pearl Harbor which they never thought it would happen.