I believe it is this; dying visions typically follow a very similar three-step pattern.
O'Sullivan argued that American expansion and imperialism was justified because <span>A) gaining new territory would allow democracy to spread throughout the continent.
He says in the quote that "</span><span>Providence has given us for the development of the great experiment of liberty and federated self-government entrusted to us," so you can see they wanted to spread their ideologies throughout the country. </span>
Humans have more developed brains and opposable thumbs. We also have better abilities to communicate.
