The answer is C. With the industrial revolution came a surplus of immigrants which in return caused the population to skyrocket. More people = more food. So the correct answer should be C.
First Islam is a noun and means the religion of the Muslims, a monotheistic faith regarded as revealed through Muhammad as the Prophet of Allah. Another meaning is the Muslim world.
now signify is a verb and means be an indication of. Some synonyms are be evidence of, be a sign of, mark, signal, mean, spell, be symptomatic of, herald, indicate; literary betoken
Movements for civil rights in the United States include noted legislation and organized efforts to abolish public and private acts of racial discrimination against African Americans and other disadvantaged groups between 1954 and 1968, particularly in the southern United States.
