Which Enlightenment philosopher introduced the idea that people enter a social contract with the purpose of maintaining order in society? A. Thomas Hobbes B. John Locke C. William Blackstone D. Charles-Louis Montesquieu

treaties

explanation:

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

international economic development agencies harm poorer nations by encouraging them to serve as exporters to wealthier nations.