Final answer:
Islam spread through trade routes and military conquests.
Step-by-step explanation:
The spread of Islam was accomplished through trade and conquest. Islam diffused from Mecca and spread throughout the Middle East, Central Asia, and North Africa through trade routes and the migration of Muslim traders and missionaries. Muslim merchants and traders carried the teachings of Islam with them as they traveled and established communities along these trade routes. Additionally, the military conquests of Islamic armies contributed to the spread of Islam.