Answer:
U. S. history is important because it helps us learn what it was like in the past, the mistakes people made, as well as the things that led us to become who we are today. With history, we can learn how to keep improving, become less likely to repeat mistakes, etc. (I hope this helps. I tried to give a brief little summary )
Reduced dependence on nonrenewable resources
Our dependence on fossil fuels has actually increased dramatically as more and more people own vehicles. Vehicles are becoming more efficient, but with so many on the road at once, we're burning through our nonrenewable resources fast. It may not happen on our lifetimes, but we'll run out eventually and unless we find a better source of energy by then, we'll be in a bad situation.
Option C, It declared slaves to be in bondage even in free states or territories, is the right answer.
The supreme court of the United States on March 6, 1857, asserted that a Slave ( Dred Scott) who was living in the free state and territory of the United States was not allowed to his freedom and that the African -Americans were not and could never be subject of the U.S. Citizenship. Supreme Court also declared that Congress had no power to exclude slavery from the territories of U.S. This became Abolitionists (the White Northerners, who opposed Slavery) outraged from the decision made by the Supreme Court.
Definition- Détente is a word that refers to a relationship that is better than usual. During the Cold War, the US and the Soviet Union improved their relations.
Example- During the Cold War, this process led to the signing of several important agreements. So Cold War.
Hope this Helped! :T
