Answer: Gold
Explanation: "Spanish explorer Francisco Pizarro heard rumors of an empire to the south that had large amounts of gold."
<span>I think you mean this, "Shortly after the United States victory in the Spanish-American War, U.S. forces _____." According to researches that I've read, the answer to your question would be "U.S. forces </span>fought against an insurrection in the Philippines".
When citizens cast their ballots for president in the popular vote, they elect a slate of electors. Electors then cast the votes that decide who becomes president of the United States. Usually, electoral votes align with the popular vote in an election.
Making changes by answering with my sarcasm. How sweet.