How significant was the spanish american war to the growth of the united states?

By the Treaty of Paris (signed Dec. 10, 1898), Spain renounced all claim to Cuba, ceded Guam and Puerto Rico to the United States, and transferred sovereignty over the Philippines to the United States for $20 million. The Spanish-American War was an important turning point in the history of both antagonists.

a. favoring native born americans over immigrants.