In the 1880s the majority of American leaders were for imperialism, with it being the practice of nations controlling weaker areas. Admiral Alfred T. Mahan of the U.S. Navy tried to get government officials to get more US Naval power to compete with other nations. Later the government responded by building nine steel hulled cruisers from the time of 1883 to 1890. This made the U.S. the third strongest naval power.
Some U.S. citizens used the philosophy of Social Darwinism and Anglo Saxon superiority to back up the idea that the U.S. needs to spread civility to other nations. They also wanted Christianity to be spread.
In 1867 William Seward, the secretary of State under the president Abraham Lincoln and Andrew Johnson, helped the U.S. buy Alaska by arranging the deal which allowed the U.S. to buy Alaska. This was sold from Russia.
In 1959 Alaska was made a state.
In 1867 the U.S. took over the midway islands.
in the Pacific ocean 13,000 miles north of Hawaii.
During the 16790's U.S. Merchants would stop in Hawaii to refuel on their way to China and India.
In the 1820's Yankee missionaries created christian churches and schools there.
In 1875 the U.S. allowed Hawaiian sugar to be imported without tax. Later though the McKinley Tariff in 1890 made it so people did have to pay taxes on the imported Hawaiian sugar. This led farmers to try to get Hawaii annexed so their business wouldn't suffer. Most of the population by that time was made up of U.S. Citizens and immigrants.
In 1887 the U.S. got Hawaii to allow them to create a naval base in pearl harbor. During that time the King Kalakaua was forced by business leaders to amend Hawaii's constitution, making it so only wealthy landowners could vote. After Kalakaua died in 1891 his sister became Queen Liliuokalani and wanted Hawaii to be ruled by Hawaiians. She tried to remove property owning rules for voting. Then business groups revolted with the help of the U.S. Marines and this was encouraged by the embasador John L. Stevens. They overthrew the queen and created a government controlled by Sanford B. Dole. Cleveland wanted the queen to be given her power back, but Sanford B Dole refused, so the U.S. officially recognized the republic of Hawaii. He didn't want anexation unless most Hawaiians wanted it.
In 1897 William McKinley became president and wanted annexation. In August 12, 1898, Hawaii was made a U.S. territory. In 1959 Hawaii was turned into a U.S state.