Which statement about how islam spread to other lands is correct?

a.
early caliphs paid christian and jewish residents of medina to convert to islam.

b.
al-khwarizmi wrote the book of healing, which explained islamic beliefs to foreigners.

c.
muslim traders spread islam by talking about their beliefs with people in other places.

d.
muhammad personally led armies across north africa to convert local inhabitants.

He seventeenth amendment to the us constitution calls for the direct election of all us senators. this means that the people of each state get to vote to decide who will be their two us senators. before this, the legislatures of each state chose the two us senators from that state with no direct involvement of the average voter. why would this amendment be considered a reform? how would it benefit the people? even today some people claim that the seventeenth amendment was a bad idea. what arguments could be made for reverting selection of us senators back to the state legislatures?

Western sahara is occupied by whom? a. mauritania b.algeria c. morocco d. tunisia

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.