A sounds like the correct answer because Muhammad traveled all over Africa, Spain, and Europe converting people through his sermons.
Function. Whereas the Department of Defense is charged with military actions abroad, the Department of Homeland Security works in the civilian sphere to protect the United States within, at, and outside its borders. Its stated goal is to prepare for, prevent, and respond to domestic emergencies, particularly terrorism.
Augustine survived and became a haven for those fleeing British tyranny, from escaped slaves to British Catholics who found a refuge there. But the far-flung Spanish Empire had difficulties maintaining its North American outpost; for a short time, the settlement fell into the hands of the British.
1. Is a stock market crash