They actually don't know for sure what led to the decline but a lot of people believe that the Aryans invaded and conquered the Indus Civilization which would make sense because they were the next people group to live there. I hope this helps!
The territorial acquisition that was a result of a rebellion supported by the US military was Hawaii. Hawaii became a state in 1959. It had been an American territory with partial independence before that. Followinf several rebellions in this territory, Hawaii finally became the 50th American state in 1959, being America's most recent state to join the United States of America.
American people wanted to annex Hawaii, and the US Military supported. However, they were not aware that the people of Hawaii were not willing to be annexed, and neither was the sovereign ruler of Hawaii.
(2) political instability
the treaty of versailles is what ended world war I, germany was faced to pay reparations, take the blame, have their army shrunken, and lost territory. because of these four things, germany began to become unstable
i hope this helps!
There were many reasons. For starters, it involved getting rid of a large number of Native Americans, and while some supported this, others opposed it as they were peaceful. Another thing was that this meant the introduction of new states and it deepened the division based on whether the states should be slave states or non-slave states. Also they involved war with Mexico and some wanted this and some didn't.
He is waiting for the great pumpkin.