How did early humans protect their limited food resources?

Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment is called?

When did the us congress declare war on the confederate states?

Plz which of the following provisions of the compromise of 1850 was designed to appeal to slave states? a. congress passed a strict fugitive slave law. b. the slave trade was banned in washington dc. c. texas agreed to give away some of its land so that the territory would be available for future states. d. california was admitted to the union as a free state.