A ruler could lose the "mandate of heaven" if he or she A)
became immoral or unjust.
B)
did not convert to Buddhism.
C)
did not pass the civil service exam.
D)
were not the firstborn son or daughter

my cultural heritage consists of irish, german, native american, and others.

answer: wait what

explanation:

the commander in chief

hey.

the answer is. b) to protect migrating native american tribes .

and, c) to protect migrating native american tribes .

hope this , if it does, consider marking me brainiest! uwu