According to O’Sullivan, what is America’s role in the west?

John O' Sullivan thought that it was America's responsible to expand their power/influence across the entire North American continent

Explanation:

zoom in on the bill of rights. the other side was just as divided: some antifederalists opposed the constitution only because it lacked a bill of rights, and others opposed it on other grounds and merely used the bill of rights as an excuse to campaign against it.

.elections are held to determine who serves in congress.