Legislative district of Malabon–Navotas–Valenzuela
The Legislative district of Malabon–Navotas–Valenzuela was the combined representation of the Metropolitan Manila municipalities of Malabon, Navotas and Valenzuela in the Regular Batasang Pambansa from 1984 to 1986. == History == Prior to gaining joint representation, areas now under the respective jurisdictions of Malabon and Navotas were represented under the provinces of Manila (1898–1899) and Rizal (1907–1972), and Valenzuela under Bulacan (1898–1899; 1907–1972).
Source: Wikipedia — Legislative district of Malabon–Navotas–Valenzuela (CC BY-SA 4.0)