you haven't put any answers to pick from so we cannot answer this question
Mexico wouldn't negotiate.
Manifest Destiny.
Pacific Port.
There is many more but these are the ones I remember
<span>The rulers who followed him could not defend the empire against new waves of invasions.</span>
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!
They wrote stuff that wasn’t specific to their time period that would be relevant in the future.