Which of these had the most direct impact on the Native Americans of the Great Plains? 1)

the U. S. victory in the Mexican-American War

2)

the hunting of the buffalo to near extinction during the 19th century

3)

the migration of emancipated slaves to the West during Reconstruction

4)

the rise in immigration from Southern and Eastern Europe at the end of the 19th century

im not sure sorry about saying that i dont know

Explanation:

the following best describes postwar era writers in their works:

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.