(A) American companies lost a lot of money when British ships were sunk.
(B) ** When the Lusitania was sunk, 128 Americans were killed.
(C) The American people did not like having goods made in Germany.
(D) The Germans did not want America to trade with enemy countries.
EXPLANATIONS BELOW
Concept note-1: -How did Germany’s policy of unrestricted submarine warfare anger the American people? American companies lost a lot of money when British ships were sunk. When the Lusitania was sunk, 128 Americans were killed. The American people did not like having goods made in Germany.
Concept note-2: -As a result, Germany declared the waters surrounding the British Isles a war zone and stopped following international naval “prize laws, ” which warned ships of a submarine’s presence. This break from naval protocol angered and troubled the United States and the European Allies.
Concept note-3: -After failing to seize control of the sea from the British at the Battle of Jutland in 1916, Germany resumed unrestricted submarine warfare on 1 February 1917. This, coupled with the Zimmermann Telegram, brought the United States into the war on 6 April.
Concept note-4: -Unrestricted submarine warfare was first introduced in World War I in early 1915, when Germany declared the area around the British Isles a war zone, in which all merchant ships, including those from neutral countries, would be attacked by the German navy.