Final answer:
Caravans and trade routes facilitated the peaceful spread of Islam.
Step-by-step explanation:
The spread of Islam was facilitated peacefully through means such as caravans and trade routes. Muslim merchants traveled far and wide, trading goods and ideas along the way. Their movement allowed for the exchange of languages, such as Arabic and Persian, and new technologies, contributing to the expansion of Islam.
Intermarriage between Muslim traders and local women was another influential factor, as the offspring were often raised as Muslims, further ingraining Islamic culture into the local populace. Moreover, the adoption of Islam brought with it a set of customs, laws, and traditions that facilitated trade among the Muslim ummah, thereby propelling the spread of Islam even further. However, it was not only the trade itself but also the shared Islamic legal structure and values that enhanced the trust among traders and across the vast network of Islamic trade routes.