Large-scale Japanese settlement in Micronesia occurred in the first half of the 20th century when Japan colonised much of Micronesia. Modern-day Micronesian countries and territories including the Mariana Islands, Federated States of Micronesia, Palau and the Marshall Islands were once part of the South Pacific Mandate between 1914 and 1945. During the Second World War, the Japanese settlers outnumbered the Micronesians within the mandate territory, and extensively intermarried with Micronesians. A few Japanese also resided in Kiribati and Nauru, where they worked as contract labourers or established businesses. Japanese settlers in the mandated islands often intermarried with the local women and raised local families. After 1945, most of the Japanese settlers were repatriated to Japan, but the offspring of Japanese settlers and Micronesians were allowed to remain behind. These offspring usually identify themselves as Micronesians rather than Japanese, and constitute a sizeable minority in each of the territories' populace.