It is b and c at the same time but the best answewr is b
The theory that was used to justify claims of racial superiority was <u><em>social Darwinism.</em></u>
Social Darwinism was a group of ideologies that arose in the late 1800s in which Charles Darwin´s theory of evolution by natural selection, was used to justify certain social views.
According to the theory, the weak were diminished while the strong grew in power over the weak.
One of the persons who adopted social Darwinism was Adolf Hitler, who considered that the German master race had grown weak due to the influence of non-Aryans, so he targeted certain groups of people that he considered biologically inferior for extermination such as jews, homosexuals, etc.
<span>The Nez Perce. They bred a superior breed of horse, the Appaloosa. It wasn't long before the Nez Perce gained a reputation in the Northwest for their hunting skills, horsemanship and craftsmanship. Appaloosas have a reputation for strength, durability, and large spots of black, brown or other colors against white patches.</span>
French and Indian war (also known as the seven years war), led tensions between the 13 colonies and Britian. This is because in this war france lost New France to the British. When taxes began to rise in the colonies and Americans were starting to rebel, French were happy to help since it would be a sort of revenge since losing their colony in North America.
