What was abraham lincoln’s reasoning when he refused to let the southern states secede?

How did thomas paine's pamphlet common sense convince reluctant americans to abandon the goal of reconciliation with britain and accept that separation from britain — independence — was the only option for preserving their liberty?

What pact signed on 1949 reinforce that the united states would not return to an isolationist policy

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?