The Sunni-Shi'i Split
n The Umayyad leader, Mu'awiya,
was proclaimed caliph in 660.
n Ali was assassinated in 661; his son,
Husayn, was killed at Karbala in
680.
n The dispute left permanent division
within Islam.
n The Shi’i, eventually dividing into
many sects, continued to uphold the
rights of Ali's descendants to be
caliphs.