Letter A is the correct answer.
Anthropologist believe that few, if any, isolated groups have existed in human history. Recently, in Brazil, an isolated indigenous tribe has emerged from the Amazon forest and made peaceful contact with villagers from the border of Peru. This indigenous tribe has got its own way of communicating and can act in a very strange way but is very much aware of the presence of outsiders.
I wanna say D.
Hope this helps!
Answer:
B.
Explanation:
The doctrine of nullification was coined by Vice President of South Carolina, John C. Calhoun in 1828, by anonymously drafting a pamphlet titled 'South Carolina Exposition and Protest.'
According to the doctrine of nullification, the states had the right to null and void any of federal laws within state limits. In November, 1832, South Carolina adopted the Ordinances of Nullification making the tariff on imported goods null, void, and unconstitutional.
So, the best definition of nullification is in option B. Therefore, option B is correct.