Which of these events led to the United States becoming involved in World War I?
A. British warships were attacking American merchant ships.
B. Libyan pirate ships were capturing and ransoming American
sailors.
C. The Spanish Armada attacked the Great White Fleet.
D. German U-boats were sinking ships with American passengers on
board.
SUBMIT

In 1917, Germany, determined to win its war of attrition against the Allies, announced the resumption of unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that the American liner Housatonic was sunk by a German U-boat.

Explanation:

The answer is D.

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

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