(A) He may have acted alone, although Austria-Hungary thought he was helped along by the Serbian government. ... (C) He was probably assisted by the Serbian government, which hoped that his actions would spark a world war and help Serbia gain independence.
Foreign nations were trying to take over....
Answer:
answer is D
Explanation:
because some one the slaves didn't have family so the left them alone and what they did with then was pick them up to start working
Answer C.
They allowed European militaries to make deadlier weapons than ever before