Answer:
Austria-Hungary had invaded Serbia, and Russia was in an alliance with Serbia.
B and C.
Interestingly enough, the first telegraph message was by it's inventor himself, Samuel Morse, who sent a message from Washington D.C. to Baltimore, which read, "What hath God wrought?"
Answer:
I think B is the right answer
The Seven Years' War broke out in Europe while the French and Indian War was being fought in North America.
Hope this helps!
