Zheng He contributed to the prosperity of China under the Ming dynasty by

Zheng He led China to become the superpower of the Indian Ocean, considered to be “the world's most important crossroads of trade”, in the 15th century.

Explanation:

whose power in the senate is equal to the power of the speaker of the house?

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.