Majuro Atoll was claimed by the German Empire with the rest of the Marshall Islands in 1884, and the Germans established a trading outpost. As with the rest of the Marshalls, Majuro was captured by the Imperial Japanese Navy in 1914 during World War I and mandated to the Empire of Japan by the League of Nations in 1920. The island then became a part of the Japanese mandated territory of the South Seas Mandate; although the Japanese had established a government in the mandate, local affairs were mostly left in the hands of traditional local leaders until the start of World War II.