Given the task definition and input, reply with output. In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Just 90 miles away, Cuba inevitably shares a long history with the United States, from conquistadors to the Spanish-American War to the Cold War. Here are some of the top moments in that history, even before the countries came into being. Old World meets New World Christopher Columbus lands on Cuba in 1492 and claims the island for Spain, leading the way for that country's conquistadors to explore the Caribbean and the part of the U.S. Southeast that's now Florida, among other parts of the Americas. Spanish-American War The United States helps Cuba win independence from Spain in a war between the European country and the Americans in 1898. In one of the more famous moments, Theodore Roosevelt and his Rough Riders charge up Cuba's Kettle Hill during the Battle of Santiago, and the so-called 1st Volunteer Cavalry become instant heroes.The United States helped Cuba win independence from Spain in 1898The new Republic of Cuba allows the U.S. naval base in Guantanamo in 1903U.S. comes to brink of nuclear war with Cuba and Soviet Union in 1962A custody battle over Elian Gonzalez becomes an international incident in 1999 
 Question:The U.S. occupation of Cuba lasts until 1902, during which _ forces modernize the capital's infrastructure.

United States