Which of the following best describes why islam is an important religion in many parts of northern africa today? a. the byzantine empire refused to trade with africans, allowing muslim traders to control the region. b. sharia law required muslim empires to conquer new regions and convert their residents to islam. c. islamic caliphates spread islam throughout the region during the postclassical period. d. only people who converted to islam were allowed to hold jobs.

Islamic Caliphates spread Islam throughout the region during the post classical period and this statement best explains why Islam is an important religion in many parts of northern Africa today. The correct option among all the options that are given in the question is the third option or option "c".

The correct answer is C. Islamic caliphates spread Islam throughout the region during the postclassical period.

In Historical studies, the post-classical period is the name for the period after the fall of the Roman Empire at the end of the 5th century AD. Islam emerged as a major religion in the Arabian peninsula at the beginning of the 7th century and it rapidly spread throughout the Middle East, North Africa, and beyond. The reason why it extended so fast was that Islam was organized in a central Islamic empire called Caliphate, which was in charge of spreading the religion through preachers and mainly through the conquest of new territories.

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