Warhawks in Congress who demanded that the United States expand its borders into Canada and Florida was a factor in the start of the War of 1812.
The United States entered the war in 1812 for a variety of reasons, including British interference in its trade and the forced recruitment of its seamen, the desire to expand settlement into Indian, British, and Spanish territories, the desire to take over Canada and end British influence in North America, as well as defending the country's interests.
The French Revolutionary and Napoleonic Wars gave rise to the tensions that led to the War of 1812. Both France and Britain attempted to prevent the United States from trading with each other during this practically ongoing battle, which hurt American interests.
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