Answer:
When Gavrilo Princip assassinated Franz Ferdinand, the heir of Austria-Hungary
Explanation:
Answer: A way to keep plantations running.
Explanation:
Slavery played a fundamental role during the American Civil War. Most of the South's slaves were used in the plantations. During and before the Civil War, slaves fought for their own freedom, and many of them fled from servitude during the war.
Slavery was the main reason for secession, primarily for the Southern opposition to the efforts by Northern antislavery political powers to prevent the development of slavery in western states.
These treaties, which took much time and effort to finalize, ceased with the passage of the 1871 Indian Appropriation Act, declaring that "no Indian nation or tribe" would be recognized "as an independent nation, tribe, or power with whom the United States may contract by treaty."
I am almost 100% sure that the answer is A. I remember using that has my answer before and I got it right. But just in case I am wrong, look up the official definition and see if it matches up with A.