The correct answer is - Kublai Khan promoted religious tolerance and exchanges between Christians, Muslims, Buddhists, and Hindus.
Kublai Khan, and pretty much all the rulers of the Mongol Empire, even though mostly are portrayed as savages and barbarians, were actually one of the most tolerant of all in there time towards the different cultures and religions, and never made problems to the people they were ruling over on this basis. The Mongols can even be seen like globalists, and they encouraged cultural exchange, religious exchange and tolerance, and were trying to create an environment were people from different ethnicity, cultural and religious backgrounds would live in peace and harmony, and through it to create a unified empire.
The native american came to the new world with the conquistadors. For one spanish conquistador an expedition that began on a texas beach ended with a much different kind of notable attainment than whichever the spanish crown and catholic church perhaps anticipated. The remarkable journey also opened a conversation about unfair benefit and human rights that endures to this day. During the age of exploration, the spanish conquistadors arose to the america in exploration of the three G's: gold, glory, and God. The spanish crown acknowledged the gold and glory and the catholic church acknowledged the converts. A fourth G was typically on the consideration prize list as well: geography. European controls contended dynamically and violently to claim land in the america in command to spread their territories across the oceans.
Answer:b. prevented Japan from having or using an army.