Prior to gaining joint representation, areas now under the respective jurisdictions of Pasig and Marikina were represented under the provinces of Manila (1898–1899) and Rizal (1907–1972). These two municipalities were separated from the latter to form the Metropolitan Manila Area on 7 November 1975 by virtue of Presidential Decree No. 824;[1] Metro Manila was represented in the Interim Batasang Pambansa as Region IV from 1978 to 1984.