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.
Answer/Explanation
The US sought to defend its eastern border from attack and drive Spain from power in the Americas.
Answer:
The Yellow River
Explanation:
The Yellow Riverruns through northern China. It flows from west to east across the North China Plain. It is sometimes called the “cradle of the Chinese civilization” because the first Chinese people lived there. The Yellow River created rich soil for growing grain and raising cattle.