Write a summary of the early spread of Islam. Include these events: Muhammad’s death, the caliphs unify Arabia, Ali’s election to the caliphate, the Muslim entry into Spain, and the Battle of Tours.

A summary of the early spread of Islam is explained below in details.

Explanation:

Islam expanded through military success, commerce, pilgrimage, and missionaries. Arab Muslim troops captured vast regions and established imperial buildings over time.

Soon after the demise of the prophet Muhammad, there were armed campaigns, termed "futuhat," into what is presently Egypt and other parts of North Africa. In different sections of the world, Islam expanded through business and commerce.