<h2>In Medina, Muhammad set about building the followers of his religion—Islam—into an organized community and Arabian power. The Hegira would later mark the beginning (year 1) of the Muslim calendar. Muhammad, one of the most influential religious and political leaders in history, was born in Mecca around 570.</h2>
if there is a C answer im pretty sure it would be C.) They established sea trade routes, which helped in spread of ideas and goods because none of the others make sence
