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The South Tarawa population center consists of all the small islets between Bairiki (on the west) to Temaiku/Bonriki on the east.
Bairiki is a village and an islet now part of South Tarawa, and at one time itself the center of government (and therefore, capital) of Kiribati.
Bairiki includes the main administrative centre of the Republic of Kiribati (presidency and most of the ministries), but the Parliament has since moved to Ambo, halfway between Bairiki and Bonriki.