Explanation:
b is might be the answer I don't know
World War also started after archduke Francis Ferdinand got assassinated.
Answer:
A. Giving missionaries control of reservations to convert Native Americans to Christianity.
Explanation:
Grant´s policy removed Indian agents and replaced them with Christian missionaries. The task of the latter was to teach American white culture, to make Indians use European-American clothes and convert them into Christianity.
'a document about the future of slavery in all territory acquired from Mexico'.
Becasue the Wilmot Proviso put forward a law to ban slavery in states that had been taken over by Mexico in the Mexican War.