The island of Maui (; Hawaiian: ) is the second-largest of the Hawaiian Islands at 727.2 square miles (1,883 km2) and is the 17th largest island in the United States. Maui is part of the State of and is the largest of Maui County's four islands, bigger than , , and unpopulated . In 2010, Maui had a population of 144,444, third-highest of the Hawaiian Islands, behind that of and . Kahului is the largest census-designated place (CDP) on the island with a population of 26,337 as of 2010 and is the commercial and financial hub of the island. Wailuku is the seat of Maui County and is the third-largest CDP as of 2010. Other significant places include Kīhei (including Wailea and Makena in the Kihei Town CDP, which is the second-most-populated CDP in Maui); Lahaina (including and Kapalua in the Lahaina Town CDP); Makawao; ; Kula; ; and Hāna.
Polynesians, from Tahiti and the Marquesas, were the original peoples to populate Maui. The Tahitians introduced the kapu system, a strict social order that affected all aspects of life and became the core of Hawaiian culture. Modern Hawaiian history began in the mid-18th century. King Kamehameha I, king of Hawaii's "Big Island," invaded Maui in 1790 and fought the inconclusive Battle of Kepaniwai, but returned to Hawaii to battle a rival, finally subduing Maui a few years later.
On November 26, 1778, explorer Captain James Cook became the first European to see Maui. Cook never set foot on the island because he was unable to find a suitable landing. The first European to visit Maui was the French admiral Jean-François de La Pérouse, who landed on the shores of what is now known as La Perouse Bay on May 29, 1786. More Europeans followed: traders, whalers, loggers (e.g., of sandalwood) and missionaries. The latter began to arrive from New England in 1823, settling in Lahaina, which at that time was the capital. They clothed the natives, banned them from dancing hula, and greatly altered the culture. The missionaries taught reading and writing, created the 12-letter Hawaiian alphabet, started a printing press in Lahaina, and began writing the islands' history, which until then was transmitted orally. Ironically, the missionaries both altered and preserved the native culture. The religious work altered the culture while the literacy efforts preserved native history and language. Missionaries started the first school in Lahaina, which still exists today: Lahainaluna Mission School, which opened in 1831.
Kamehameha's descendants reigned until 1872. They were followed by rulers from another ancient family of chiefs, including Queen Liliuokalani who ruled in 1893 when the monarchy was overthrown. One year later, the Republic of Hawaii was founded. The island was annexed by the United States in 1898 and made a territory in 1900. Hawaii became the 50th U.S. state in 1959.
In 1937, Vibora Luviminda trades union conducted the last labor strike of an ethnic nature in the Hawaiian Islands against four Maui sugarcane plantations, demanding higher wages and the dismissal of five foremen. Manuel Fagel and nine other strike leaders were arrested, and charged with kidnapping a worker. Fagel spent four months in jail while the strike continued. Eventually, Vibora Luviminda made its point and the workers won a 15% increase in wages after 85 days on strike, but there was no written contract signed.
Maui was centrally involved in the Pacific Theater of World War II as a staging center, training base, and for rest and relaxation. At the peak in 1943-44, more than 100,000 soldiers were there. The main base of the 4th Marine Division was in Haiku. Beaches (e.g., in Kīhei) were used to practice landings and train in marine demolition and sabotage.