The correct answer is B: Immigration was based on the national origins quota system. The National Origins Act was a United States federal law that set the amount of immigrants from certain countries that were allowed to enter the U.S. Admission to the U.S was determined by ethnic identity and national origin. It reduced the number of southern and eastern Europeans and excluded Asians entering the country.
Islam spread through military conquest, trade, pilgrimage, and missionaries.
I would say trading cities became more important
Deal with the wars, religious stuggles, and societal issuses which plague the empire.
Answer:
they protect our rights against the government
