Here are the key stages of economic development in the Philippines and some significant policies in each stage: 1. Pre-Hispanic - Indigenous peoples engaged in subsistence farming, fishing, hunting. Developed irrigation systems, traded with other Asian countries. 2. Spanish Colonial Period (1521-1898) - Introduced cash crop agriculture (sugar, coconut), mining. Established galleon trade with Mexico and Spain. Economy benefited elites. 3. American Colonial Period (1898-1946) - Promoted export-oriented agriculture (abaca, coconut, tobacco). Established infrastructure like roads, ports. Introduced public education. 4. Post-WWII Period (1946-1960s