Complex sentence: Nearby candidates including Palmyra Island were disfavored due to the lack of an adequate landing sites, and the US eventually incorporated the Northern Line and other islands which lie between Kiriribati and the Line Islands, including Howland, Jarvis, and Baker islands.
Split into simpler sentences: Nearby candidates including Palmyra Island were disfavored due to the lack of adequate landing sites. The US eventually incorporated the Northern Line and other islands which lie between Kiriribati and the Line Islands, including Howland, Jarvis, and Baker islands.