In 1902, the Pacific Cable Board laid the first trans-Pacific telegraph cable from Bamfield, British Columbia to Fanning Island (Tabuaeran) in the Line Islands, and from Fiji to Fanning Island, thus completing the All Red Line, a series of telegraph lines circumnavigating the globe completely within the British Empire. The location of Fanning Island, one of the closest formations to Hawaii, led to its annexation by the British Empire in 1888. Nearby candidates including Palmyra Island were not favored due to the lack of adequate landing sites.
The islands became the crown colony of the Gilbert and Ellice Islands in 1916. The Northern Line Islands, including Christmas Island (Kiritimati), were added to the colony in 1919, and the Phoenix Islands were added in 1937 with the purpose of a Phoenix Islands Settlement Scheme. On 12 July 1940, Pan Am Airways’ American Clipper landed at Canton Island for the first time during a flight from Honolulu to Auckland.
The United States eventually incorporated the Northern Line Islands into its territories, and did the same with the Phoenix Islands, which lie between Gilberts and the Line Islands, including Howland, Jarvis, and Baker islands, thus causing a territorial dispute. That was eventually resolved and they finally became part of Kiribati under the Treaty of Tarawa.
After the attack on Pearl Harbor, during World War II, Butaritari and Tarawa, and others of the Northern Gilbert group, were occupied by Japan from 1941 to 1943. Betio became an airfield and supply base. The expulsion of the Japanese military in late 1943 involved one of the bloodiest battles in US Marine Corps history. Marines landed in November 1943 and the Battle of Tarawa ensued.
Ocean Island, where were the headquarters of the colony, was bombed, evacuated and occupied by Japan in 1942 and only freed in 1945, after the massacre of all but one Banabans by the Japanese forces. Funafuti hosted then the provisional headquarters of the colony from 1942 to 1946, when Tarawa returned to host the headquarters, replacing Ocean Island.
At the end of 1945, most of the remaining inhabitants of Banaba, repatriated from Kosrae, Nauru and Tarawa, were relocated to Rabi Island, a land of Fiji that the British government had acquired in 1942 for this purpose.
On 1 January 1953, the British governor of the colony was transferred in the new capital of Honiara, to the British Solomon Islands, with the Gilberts’ Resident Commissioner still headquartered in Tarawa.
Further military operations in the colony occurred in the late 1950s and early 1960s when Christmas Island was used by the United States and United Kingdom for nuclear weapons testing including hydrogen bombs.
Institutions of internal self-rule were established on Tarawa from about 1967. The Ellice Islands asked for separation from the rest of the colony in 1974 and granted their own internal self-rule institutions. The separation entered into force on 1 January 1976. In 1978, the Ellice Islands became the independent nation of Tuvalu.
Independence:
The Gilbert Islands gained independence as the Republic of Kiribati on 12 July 1979.