How did Japan gain administrative control of the Senkaku Islands after World War II?

Following World War II, the United States assumed control of the Senkaku Islands from Japan. This arrangement continued for several decades as part of the American occupation of the region.1

In 1972, the United States returned administrative control of the islands to Japan, concurrently with the reversion of Okinawa. While Japan maintains that it incorporated the islands in 1895, the territory remains a subject of sovereignty disputes with China and Taiwan, both of which asserted their claims in 1971 following reports of potential oil reserves in the surrounding seabed.123