Ka kammala wannan magana: A lokacin Yaƙin Duniya na ɗaya, an ƙwace yankunan tsibirin Pacific na Jamus kuma suka zama lardunan League of Nations a shekara ta 1923. Nauru ya zama umarnin Ostiraliya, yayin da sauran yankunan Jamus a Micronesia aka ba su a matsayin umarni ga Japan kuma aka kira su Dokar Kudancin Kudancin. A lokacin Yaƙin Duniya na II, sojojin Japan sun mamaye Nauru da tsibirin Ocean, tare da wani
wasu daga cikin tsibirin Gilbert kuma sun wuce ta hanyar Allied gaba a fadin Pacific. Bayan shan kashi na Japan a Yaƙin Duniya na II, umurninsa ya zama Amintattun Majalisar Dinkin Duniya da Amurka ke gudanarwa a matsayin Yankin Amintattun Tsibirin Pacific. Nauru ta sami 'yancin kai a shekara ta 1968.