The American Revolution has been important in world history because it <u>Morons</u>.
A nonstop flight to Europe
It turns the top soil and any remains crop over, producing fertilizer. It breaks up the soil for easier planting. By turning over the soil, weeds are reduced. Hope this helped!
The leaders who spread Islam after Muhammad's death were Abu Bakr, Umar, Uthman, and Ali. If you want the answer from a website, I suggest going here
--> http://peopleof.oureverydaylife.com/led-islamic-world-after-muhammad-died-7743.html <-- I hope this answer helps you.