The correct answer is "Great Britain".
The German attack on RMS Lusitania and sinking of the same ship by a submarine caused Americans to join the war. This is just simply put of course, there were many other reasons.
1850-1900 because at the start of the 1900 is the industrial revolution
In order to help please provide a picture ...
Answer:
B
Explanation:
Because b is b and it helps you understand everything