 Abra was last represented as part of the province's now-defunct third district in 1919, after its re-establishment as a regular province on March 10, 1917 by virtue of Act No.2683 warranted its separate representation, thereby reducing Ilocos Sur to two districts.When the Philippine Commission detached Tagudin from Ilocos Sur and made it the capital of the sub-province of Amburayan in Mountain Province on May 15, 1907 by virtue of Act No.