Original sentence: Eliot who was Resident Commissioner of the the Gilbert & Ellice Islands (now Kiribatii & Tuvalu) from 1913 to 1920.The I-Kiribati or Gilbertese people settled what would become known as the Gilbert Islands (named for British captain Thomas Gilbert by von Krusenstern in 1820) some time in between 3000 BC  and 1300 AD
Edited sentence: Eliot who was Resident Commissioner of the Gilbert & Ellice Islands (now Kiribatii & Tuvalu) from 1913 to 1920.The I-Kiribati or Gilbertese people settled what would become known as the Gilbert Islands (named for British captain Thomas Gilbert by von Krusenstern in 1820) some time in between 3000 BC and 1300 AD