Write two short paragraphs. the first paragraph should summarize how islam spread. the second paragraph should describe the importance and the results of trade in the muslim empire. can someone i need and i kind of need it fast like asap .

I only know one and thats The expansion of the Muslim Empire in the years following the Prophet Muhammad's death led to the creation of caliphates, occupying a vast geographical area and conversion to Islam was boosted by missionary activities particularly those of Imams, who easily intermingled with local populace to propagate the religious teachings.