After Muhammad's death, the sunni wanted Abu Baker, Muhammad's closest advisor, to become the new leader of the muslim world, while the Shi'a favored Muhammad's cousin Ali. Abu Baker was made the leader of islam, but this left many bitter feelings and more disagreements arose between the two sides, especially many years later following Ali's assassination, eventually leading to the creation of two separate sects.
The Arrival of Railroads
A Railroad is like a Transport of things like a train. you can transport people from place to place with railroads or you can transport supplies
Hope this helps
Chinese River Valley civilization<span>although it was from 8000 to 2000 BCE
They used the river for irrigation and they raised pigs and chickens. Used stone tools</span>
He was the leader when the United States was an industrial and agricultural success.
A is the answer i believe
