After Qin Shi's was killed in 207 BC the dynasty collasped totally because the power was too centralized.
Wanted to get rid of the colonial re of Britain.
The answer to the question is B
The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
The enlightenment was a period of new ideas and world views fed by a better understanding of the world and our place in it
