Spanish-American War began in 1898. At that time Spain ruled Cuba, and many Americans had heard that the conditions on the island were intolerable. The United States sent the battleship Maine to protect Americans living there. In February the ship exploded, and 260 people on board died. “Remember the Maine” became a popular expression. War was declared, and battles occurred not only in and around Cuba but around the Philippines as well. Teddy Roosevelt became famous as one of the leaders of the Rough Riders. The war ended on August 12, 1898. Children could learn more at: Spanish-American War.