Question

in the islamic religion, disagreement about muhammads successor led to what?
a the crusades
b the sunni and shia split
c the beginnings of christianity
d the end of the islamic religion

Explanation:

After the death of the Islamic prophet Muhammad, a disagreement over who should succeed him as leader of the Muslim community led to a split between the Sunni and Shi'a branches of Islam. The Crusades were conflicts between Christian and Muslim powers, unrelated to this succession dispute. The beginnings of Christianity predate Islam, and Islam did not end due to this disagreement.

Answer:

B. the Sunni and Shi'a split