Why was it so critical to prevent trade with Europe during the Civil War?

Which was not part of the debate over going to war? a. president james madison tried to avoid war but was convinced by those who wanted it.b. new england ship builders wanted to go to war to save their buisnesses.c. most westerners and some southerners wanted to go to war to gain land.d. war hawks said they could march into canada and take britain's territory.

In 1819, what did the united states obtain from spain for $5 million?

What effect did colonialism have on the economies of latin america countries?