Final answer:
Muslims between 600 C.E. and 1450 C.E. were generally tolerant of other religions, fostering periods of peaceful coexistence and intellectual collaboration in regions like Spain.
Step-by-step explanation:
From 600 C.E. to 1450 C.E., Muslims were generally tolerant towards other religions, especially the People of the Book, which included Christians and Jews. Under Islamic rule, such communities were recognized as protected groups and were allowed autonomy in their religious affairs in exchange for paying a special tax.
This period fostered the 'convivencia' or living together harmoniously in places like Spain, where different faiths coexisted and contributed to a flourishing society. Religious tolerance was more strained, however, when rulers less inclined toward peace came into power or when religiously charged conflicts, like the Crusades, escalated tensions.