Hawaii's sugar cane plantations were a great industry that America wanted a piece of. First, they started by signing a treaty that took away all tax on trades between Hawaii and America. Obviously, that wasn't enough for America because soon after Hawaii was annexed by America.
The Confederate troops first fired at Fort Sumter in South Carolina. Less than 34 hours later, the union forces had to surrender to them. The reason this firing occurred, was over the debate on slavery. Sectionalism and secession also played part in beginning the civil war.
Lots of civil wars and the invasions of barbarians like the huns and other tribes brought down the empire since the senator could not get along and refused to fix the problem.
I dont know what is that and you know i m not brainy i m sorry i dont understand please give me a second chance to help you sorry i did not answer yet