 Except during the Second World War, the chartered city of Davao also formed part of the province's representation.Initially being excluded from representation in the lower house of the Philippine Legislature in 1907, the then-non-Christian-majority areas of the Philippines — which included the Department of Mindanao and Sulu, of which Davao was part — were finally extended legislative representation with the passage of the Philippine Autonomy Act in 1916 by the United States Congress.The Revised Administrative Code (Act No.