Answer:
the Treaty of Paris
Step-by-step explanation:
An armistice was concluded in August of 1898 and a peace treaty was signed in Paris on 10th of December. Spain had to cede the Puerto Rico, the Philippines as well as Guam in the Mariana Islands to United States. Cuba gained independence, in fact, came under American control. The same year the United States annexed the Hawaiian Islands. With the conquests of the Spanish-American War, the foundations of the American colonial empire were struck.