More books were produced more rapidly because they no longer had to be copied by hand, which lowered the price and made them more accessible.
The answer is D
Reason being that the sinking of ships by German U-boats, and a German attempt in the Zimmermann Note to get Mexico to declare war on the U.S. pushed the U.S. to getting involved.
The Answer is A because the only time the U.S went to war with Russia was the cold war. well I wouldn't call it a war it's like a conflict but no fighting just agrueing and unagreement.
