How did civil service exams improve the government in china. Answers choices are on the picture. (Will give brainliest)

What was one of the difficulties adams faced as president? a. european countries were trying to move back in on u.s. lands b. possible war with england; fighting between political parties c. problems with spain; trade disputes with russia d. census issues; problems with selecting a new capital

What could have been done to stop the illegal voting? what about the violence?

What are some inventions during the han dynasty?