I'm pretty sure the answer is B.
The French and the British dispute began when both sides wanted the Ohio River Valley and could not conclude to a solution thus why war started. Both sides wanted it to expand settlements into the area. The French made allies with some local Indians because they were struggling to take colonies in North America. The British lost this war putting them in high debt which would soon cause problems against the American Colony.
To help the emperor enforce his tax system and help the Qin enforce a strict chain of command.
