20 POINTS WILL GIVE BRAINLIEST IF THERE IS NO ANSWER IN YOUR COMMENT YOU WILL BE REPORTED what factors led to the rapid growth of islam following muhammads death despite early internal conflicts between sunni and shia

Caliphs and the Ummayad Caliphate.

Explanation:

The factors that led to the rapid growth of Islam after Muhammad's death are caliphs and the Umayyad caliphate. The first four caliphs helped the Islams overcome neighboring threats. The split between Suni and Shiite lead to the creation of the Umayyad (a dynasty of Sunni caliphs that ruled the Muslim empire until 750).

They directed the conquests that extended Arab rule from Spain and Morocco in the west to the Indus River Valley in the east. Although Islam also spread peacefully through trade and cultural exchange—reaching East Africa as early as the mid-700s—these conquests further enabled the spread of Muslim civilization and had an impact on Europe, Asia, and Africa.

the term is einsatzgruppen

ok sorry the answer is a. by their religion