During the centuries between 1450 and 1750, the spread of islam was usually the

Answer;

Work of Muslim holy men, scholars, and traders

During the centuries between 1450 and 1750, the spread of Islam was usually the work of Muslim holy men, scholars, and traders.

Explanation;

The spread of Islam was attributed to various factors such as; it offered a vibrant spiritual alternative to the pagan polytheism common to inhabitants of the Arabian Peninsula, Islamic brought various forms of art, it advanced in education also helped to explain the spread of Islamic culture and finally trade was another reason that led to the spread of Islam.

The spreading of Islam was generally the work of Muslims holy men, Traders, and scholars during the centuries between 1450 and 1750.

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to