Aba Island
On 21 December 1933, the Governor of Cochinchina, Jean-Félix Krautheimer, signed Decree No. 4702-CP merging Spratly Island, Amboyna Cay, Itu Aba Island, Northeast Cay, Southwest Cay, Loaita Island, Thitu Island and other dependent islands with Ba Ria province (present-day Vietnam's Bà Rịa–Vũng Tàu Province).