I do not think the settlers were justified in expanding west, because the territory was already claimed by the Native Americans. I do understand the promise the promise that was made, but the settlers had no right to try to settle in the west.
Answer:
After the signing of an armistice with Spain, American troops raised the U.S. flag over the island, formalizing U.S. authority over its one million inhabitants. In December, the Treaty of Paris was signed, ending the Spanish-American War and officially approving the cession of Puerto Rico to the United States
Explanation:
