Han emperors were so successful at maintaining power because:

The Silk Road established steady trade.
Peasants were regularly pacified and happy.
Succesive emperors proved to be strong leaders.
They oversaw important inventions of paper, wheelbarrows and the like.

I don't know if you still need this answer, but i think it is Successive emperors proved to be strong leaders. Please correct me if im wrong. Hope this helps!

Explanation:

religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.

answer by yourhope:

the speaker of which statement would be best served by joining an interest group?

i want politicians to make more of an effort for lgbt rights!

: )