It's the famous... Mahatma Gandhi!
In the 1800s, reservations were set aside for (B): specific American Indian tribes recognized by the US government.
What happened after the collapse of the Ming Dynasty were:
1) there were natural disasters, war and rebellions.
2) earthquakes.
3) war against the Japanese.
4) unusually dry and cold weather.
5) plague
6) misrule
7) money crisis
8) rebellion from Li Zicheng's troops.