When the Civil War broke out in the United States, most countries in Europe and Latin America? used slave labor in their factories.

had laws against slavery.

relied on slaves to plant and pick their crops.

had never relied on slaves

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.