What reason would people give at the end of the 1800s for why the united states should expand outside the continent?

the frontier in the United States had been settled and American needed other areas in which to expand.

b: to eliminate competition from other farmers

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.