Since Russia had an alliance with Serbia, it ordered its forces to mobilize for war. it wasn't a formal alliance, but it did specify that if someone declared war on Serbia, Russia would also step in. This resulted in other countries also getting involved in the war. The answer would be D!
-TetraFish
Answer:
The answer is D. They traded war materials with allies
Since the US didn't want to get involved with the war directly in the beginning, they traded materials and resources to aid their allies.
Explanation:
Answer:
B the large influence revivals had on Americans
Explanation: