This was made so when the McLareen family sold its hacienda to Jose Yulo Alano, Rafael Alunan and party who organize a company under the cooperate name of Rio Grande Estate.Recognizing his immense power and leadership over the area, the provincial governor of Cotabato organizes the Kabacan into a Municipal District with Esteban Somera Abellera Sr. its first mayor in 1935.After the Japanese landing on Davao, the Miura Detachment then proceeded to advance towards Kabacan but had to struggle fighting the remaining Filipino-American resistance.[citation needed] In 2019, seven barangays were among the 63 in the province which became part of the Special Geographic Area of the newly created Bangsamoro,[7] after having the affirmative vote won to join the autonomous region in a plebiscite held on February 6.[8][9] Nanga-an, Simbuhay, and Sanggadong were among the 39 in the province that unsuccessfully voted for the inclusion in the Autonomous Region in Muslim Mindanao in 2001, while the other four[10] were proposed to be part of the Bangsamoro, which replaced ARMM by virtue of Republic Act No.The high mountains and rolling hills leaping close to the river plus the narrow plains have varied topographical features.Poverty incidence of Kabacan Source: Philippine Statistics Authority[25][26][27][28][29][30][31][32] Commercial activities are in the Public Market and along the National Highway and USM Avenue.Kabacan serve as a business and trading center for the adjacent municipalities of Carmen, Pagagawan, Pikit and Matalam.