What is the cause and effect of the Muslim expansion?

The cause of Muslim expansion primarily stemmed from the early Islamic conquests motivated by religious fervor, economic gain, and the desire for political power. As a result, this expansion led to the establishment of vast empires, such as the Umayyad and Abbasid caliphates, which facilitated the spread of Islam, cultural exchange, and advancements in various fields, including science, philosophy, and trade. The interactions between Muslim and non-Muslim societies during this period also contributed to significant cultural and intellectual developments.