Humans arrived in the Marshall Islands in the first millennium B.C. and gradually created permanent settlements on the various atolls. The early inhabitants were skilled navigators who frequently traveled between atolls using stick charts to map the islands. Society became organized under two paramount chiefs, one each for the Ratak (Sunrise) Chain and the Ralik (Sunset) Chain. Spain formally claimed the islands in 1592. Germany established a supply station on Jaluit Atoll and bought the islands from Spain in 1884, although paramount chiefs continued to rule. 

Japan seized the Marshall Islands in 1914 and was granted a League of Nations Mandate to administer the islands in 1920. The US captured the islands in heavy fighting during World War II, and the islands came under US administration as part of the Trust Territory of the Pacific Islands (TTPI) in 1947. Between 1946 and 1958, the US resettled populations from Bikini and Enewetak Atolls and conducted 67 nuclear tests; people from Ailinginae, Rongelap, and Utrik Atolls were also evacuated because of nuclear fallout, and Bikini and Rongelap remain largely uninhabited. In 1979, the Marshall Islands drafted a constitution separate from the rest of the TTPI and declared independence under President Amata KABUA, a paramount chief. In 2000, Kessai NOTE became the first commoner elected president. In 2016, Hilda HEINE was the first woman elected president.