What is the Dred Scott decision and how did it contribute to the causes of the civil war? I will give 40 points

Immigrants arriving in the united states during the late 1800s experienced many difficulties. which of the following was a problem which large numbers of immigrants faced?

Humphreys collecting data for the tearoom trade study under the pretense that he was a lookout is an example of a violation of the principle of: a. justice.b. beneficence.c. respect for persons.

The judicial system of courts derives its powers from what article of the constitution