What significant event is marked by the Spanish American War?

The Spanish-American War is primarily significant for its role in the United States' support for Cuban independence from Spanish rule. This conflict arose in the late 19th century when the U.S. sought to intervene on behalf of Cuba, which was struggling for independence. The war was fueled by a mix of humanitarian concerns for the Cuban people's plight and American interests in promoting democracy and free trade.

The outcome of the war in 1898 resulted not only in the liberation of Cuba but also in the U.S. establishing itself as an emerging world power with significant influence over Caribbean and Pacific regions. As a result, the war marked a turning point for U.S. foreign policy, shifting its focus toward imperialism and intervention in other countries’ affairs.

While aspects such as territorial expansion, including the annexation of Puerto Rico, are outcomes related to the war, the core impetus behind the conflict and its most lasting impact was the United States' commitment to supporting Cuba’s independence. The interaction between the desire for Cuban sovereignty and the U.S. military intervention led to a new era in American diplomacy and global presence.