They were all build and relied on a major river. Egypt had the Nile, India had the Ganges River, and China had the Yellow River.
Needed a strong central government
true because in 1928 the great depression caused them to fall
Answer:
An empire is an extensive group of states or countries under a single supreme authority, formerly especially an emperor or empress. ... An empire is different from civilization because its an excessive group while civilization is organization based.
Explanation: