"In 1893, a group of planters and businessmen, mostly United States citizens, launched a coup against the monarch of an island nation. After setting up a new government, they proposed annexation by the U.S. This plan was turned down by President Grover Cleveland at the time, but President William McKinley and the American public supported annexation by 1898. They argued that the territory was vital to the U.S. economy, that it would serve as a strategic base to better protect expanding U.S. interests in Asia, and that other nations would claim the islands if the U.S. did not."
This passage describes events that led to the U.S. acquisition of what territory?