Name one war fought by the United States in the 1800s.

The War of 1812 is a significant conflict that took place between the United States and Great Britain from 1812 to 1815. This war was primarily driven by issues such as trade restrictions brought about by British blockades, the impressment of American sailors into the British navy, and the desire of some Americans to expand their territory, particularly into Canada. The war had several notable events, including the burning of Washington, D.C., and a famous naval victory by American forces, which boosted national confidence and identity. It concluded with the Treaty of Ghent, which essentially restored the status quo ante bellum, meaning that no territory changed hands and the pre-war boundaries were reinstated. This war played a crucial role in shaping the future of the United States, fostering a sense of unity and nationalism.

In contrast, the other options refer to conflicts that occurred outside of the 1800s or are from different historical contexts, making them unsuitable choices for this question.