After Muhammad's death in 632 CE, his friend Abu Bakr was named caliph and ruler of the Islamic community, or Ummah. Sunni Muslims believe that Abu Bakr was the proper successor, while Shi'a Muslims believe that Ali should have succeed Muhammad as caliph.
The Rashidun Caliphate (632–661) was led by Abu Bakr, then by Umar ibn Khattab as the second caliph, Uthman Ibn Affan as the third caliph, and Ali as the fourth caliph.
The development of the steam engine....of that is an option. You really should include the choices.
The correct answer is: Capitalism is a system in which goods are made by private businesses, but socialism stresses government control over production.
The Belgian army was considered to be the smallest army win WW2
The answer is pi equals 3.14
