Trade helped the religion of Islam spread in many ways. On the way to the trade centers the tarders would meet other merchants talk about different thing like their religion. So maybe the people they were telling about their religion to got interested in it, and wanted to become Muslim. Another way trade spread Islam is they brought inventions and ideas. When they showed other peopl their inventioons the people asked abotu them and they said they made it beecuase of their religion. I think it may have helped Islam spread by giving to the poor, or praying in front of people. That got other people interested people in what they were doing. So after they asked why they did what they did the Muslims explained it to them. The other people probably liked what they were doing and wanted to change to Islam. Those are the reasins on how tade helped Islam spread.