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:
One Way the tensions Began Was the formation of NATO and the Warsaw Pact creating tensions beacuse if a nato member declared war on any of the Warsaw pact mebers all out war
hope that helps
Answer:
North Carolina, Virginia, Arkansas, and Tennessee.
Explanation: