(A) Sinking of the Lusitania
(B) ** Written insult of the President’s lack of courage
(C) Zimmermann Telegram
(D) Economic ties Great Britain
EXPLANATIONS BELOW
Concept note-1: -When WWI began in Europe in 1914, many Americans wanted the United States to stay out of the conflict, supporting President Woodrow Wilson’s policy of strict and impartial neutrality. “The United States must be neutral in fact as well as in name during these days that are to try men’s souls.
Concept note-2: -The US entered World War I because Germany embarked on a deadly gamble. Germany sank many American merchant ships around the British Isles which prompted the American entry into the war.
Concept note-3: -Expert-Verified Answer. Militarism, Alliances and Imperialism are the cause of World War I. liberalism is not the cause of World War I.