What did the immigration act of 1924 do?

it prevented immigration from Asia, it set quotas on the number of of immigrants from eastern hemisphere, and provided funding and an enforcement mechanism to carry out the longstanding ban on other immigrants.

Explanation:

So in other words, it prevented immigration. And kept tabs on it.

the correct statement is letter a.   according to the mandate of heaven, kings were considered godlike beings, so they could do as they .

the mandate of heaven is a chinese political and religious ideology used since ancient times to justify the rule of the king or emperor of china, that has been in place since the zhou until the dynasty system ended. it has been created to justify the zhou as the main power of the region. in order to keep harmony, the ruler has to make what he wants and what people want. he had to make good choices to satisfy the people and then they will be happy and keep you in power.

islam spread slowly through much of africa through trade and preaching.