Answer :
Final answer:
The outbreak of war in Europe in 1914 directly threatened vital U.S. interests, including trade disruption, the sinking of American merchant ships, and the potential spread of radical ideologies.
Explanation:
The outbreak of war in Europe in 1914 posed several threats to vital U.S. interests. One of the key threats was the disruption of trade and commerce. As the war escalated, the belligerent nations imposed blockades and restrictions on trade, affecting American exports and imports. This threatened the economic well-being of the United States, which heavily relied on international trade.
Another direct threat to U.S. interests was the sinking of American merchant ships by German submarines. The most notable incident was the sinking of the Lusitania in 1915, which resulted in the loss of American lives and property. These actions violated the principles of freedom of the seas and raised concerns about the safety of American citizens traveling on the high seas.
Furthermore, the war created political instability and the potential for the spread of radical ideologies. The conflict gave rise to nationalist and extremist movements, which could have a destabilizing effect on the United States and its democratic values.
In summary, the outbreak of war in Europe in 1914 directly threatened vital U.S. interests in terms of trade disruption, the sinking of American merchant ships, and the potential spread of radical ideologies.
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