An incumbent is a current officeholder, running for re-election.
The Treaty of Paris, ending the Spanish-American War, was signed on December 10. Spain gave up Guam, Puerto Rico, its possessions in the West Indies, and the Philippines in exchange for a U.S. payment of $20 million. The United States occupied Cuba but, as provided for in the Teller Amendment, did not try to annex it.
People moved West because the government offered new settlers a lot of land for farming at a very low cost
Wong-Woo was eventually allowed to enter because the Secretary of Labor overruled the denial. This suggests that Wong-Woo had a valid application for coming to the U.S.