Which war was fought to prevent British interference with American trade?

The War of 1812 was primarily fought to address issues such as British interference with American trade, impressment of American sailors into the British navy, and the desire for expansion into Native American territories. This conflict emerged from growing tensions following the Revolutionary War, as trade restrictions imposed by Britain greatly affected the American economy.

During this period, Britain's ongoing maritime practices were perceived as violations of U.S. sovereignty and rights as a neutral nation, prompting the United States to declare war in 1812. The outcomes of the conflict underscored the importance of national sovereignty and firmly established the U.S.'s presence in international trade and affairs.

In contrast, the other wars listed do not primarily focus on trade interference: the Revolutionary War was about independence from British rule; the Mexican-American War was largely about territorial expansion; and the Spanish-American War dealt with imperialistic ambitions in the Caribbean and Pacific regions.