The United States Constitution is the highest authority of the United States. This is established through which of the following?

What does president obama say about modern day "hoovervilles"?

Which statement best describes the underground railroad? a.) it is a train that took slaves from the south to the north. b.) it is a business that harriet tubman founded to slaves become free. c.) it is a secret route that slaves took to escape from southern slave states to the north. d.) it is a road that slave owners disliked using for travel.

Tension between the british. and boers was caused primarily by what things?