Final answer:
Napoleon imposed the Continental System to trap the United States in an open conflict with Great Britain.
Step-by-step explanation:
In an attempt to trap the United States in an open conflict with Great Britain, Napoleon imposed the Continental System. This system aimed to isolate Britain by forbidding European countries under French control from trading with the British. However, this strategy ultimately backfired, as it led to tensions between the United States and France, resulting in the War of 1812 with Great Britain.
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