Much of Polynesia, including the original settlers of Hawaii, Tahiti, Rapa Iti and Easter Island, was settled by Marquesans, believed to have departed from the Marquesas as a result more frequently of overpopulation and drought-related food shortages, than because of the nearly constant warfare that eventually became a prominent feature of the islands' culture. Almost the entire remainder of Polynesia, with the exception of a few areas of western Polynesia as well as the majority of the Polynesian outliers, was colonized by Marquesan descendants centered in Tahiti.