What was an important result of the spanish american war

The question is too general. There can be many answers to it.

Here I share a good proposal.

The brief war fought against the Spanish Navy and land forces in 1898 established the United States as a global, major navy and military power. The war was fought in Cuba - the Caribbean - and in the Pacific.  If a century before the American governments were not willing to join wars among European powers and pursued a cautious diplomacy, full industrialization, territorial expansion and a fantastic growth of economic might made the United States a player in world affairs to be reckoned with a century later. That´s one of the most significative results of the Spanish-American War.

Explanation:

these acts divided the south into five military districts.