Final answer:
The religious changes in the Mongols of the Il-Khanate involved a gradual shift towards Islam, cultural assimilation, and adoption of Islamic culture.
Step-by-step explanation:
The religious changes in the Mongols of the Il-Khanate can be described as a gradual shift towards Islam and adoption of Islamic culture. After the conversion of the Il-Khanate ruler Ghazan to Islam in 1295, Mongols living in the Il-Khanate started intermarrying with their Muslim subjects, which increased their cultural assimilation. They abandoned their roles as military conquerors and became part of the sedentary societies they had conquered, adopting Islam as the official religion and becoming patrons of arts and scholarship.