What is a main principle of adam smith's the wealth of nations

During wwi, literacy tests were used to control immigration, which marked a return of what type of ideology in some americans?

Which statement best summarizes the outcome of the haitian revolution? a. french colonists agreed to remain in haiti to the new countryplan its government. b. france gave up control of haiti, but it forced haitian leaders toallow slavery to continue. c. haiti established a short-lived democratic government, but it wassoon colonized again by spain. d. haiti became independent from france, but the fightingdevastated its economy.

What was the main objective of the national origins act of 1924