1. Trade Restrictions: The British imposed trade restrictions on the US through the Orders in Council, which limited American trade with other countries and caused economic hardships.
2. Impressment of Sailors: The British Royal Navy forcibly recruited American sailors into their service, which violated US sovereignty and angered many Americans.
3. Support for Native American Tribes: The British provided support and weapons to Native American tribes that were fighting against American expansion in the Northwest Territory.
4. Desire for Expansion: Some Americans believed that the War of 1812 would provide an opportunity to expand US territory into Canada and Florida, which were under British control.
The combination of these factors led to a growing sense of nationalism and resentment against Great Britain, eventually culminating in the declaration of war in June 1812.