(A) Russia
(B) Italy
(C) France
(D) ** United States
EXPLANATIONS BELOW
Concept note-1: -The U.S. Readies for War The sinking of Lusitania didn’t directly cause the United States to enter the war. It did, however, fuel virulent anti-German sentiment in Britain and the United States and hinder diplomatic relations between Germany and the United States.
Concept note-2: -Nearly 10% of Americans identified as ethnic Germans, most of whom hoped the United States would remain neutral in the war. Public opinion began to shift away from neutrality following Germany’s sinking of the Lusitania in May 1915, which resulted in the deaths of nearly 1, 200 passengers, including 128 Americans.
Concept note-3: -On May 7, 1915, the German submarine (U-boat) U-20 torpedoed and sank the Lusitania, a swift-moving British cruise liner traveling from New York to Liverpool, England.
Concept note-4: -The sinking of the Lusitania was an important event in World War I. The death of so many innocent civilians at the hands of the Germans galvanized American support for entering the war, which eventually turned the tide in favor of the Allies.