how did westward expansion and international relations force the united states to modify its revolutionary republican ideals?

It led to debates about slavery.

Explanation:

In the mid-19th century, the quest for control of the West led to the annexation of Texas and the Mexican–American War. This expansion led to debates about the fate of slavery in the West, increasing tensions between the North and South that ultimately led to the collapse of American democracy and a brutal civil war.

i dont know cuh

a.) are both appointed for life