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Which was a major cause for the entry of the U.S. into World War 1?

User Dorsh
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2 Answers

1 vote
Germany’s resumption of submarine attacks on passenger and merchant ships in 1917
User Regine
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5 votes

Answer:

The assassination of Archduke Franz Ferdinand of Austria-Hungary.

Step-by-step explanation:

User Joakim Johansson
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