Answer:
World War I developed into a global war for a number of reasons. First, the system of alliances quickly brought other nations into the war. This quickly led to a war between the two alliance systems. But Italy switched sides and entered the war on the side of the Triple Entente in 1915.
Explanation:
This passage implies that the author is aware that new weapons have broadened the theater of war.
It's C. Germany sunk the Lusitania and tried to get Mexico to attack the US in the Zimmerman Telegram.
Hi there!
The correct answer to your question is C.
I hope this helps!
Brady
