During the Philippine Commonwealth, technology focused on nation-building. With American guidance, Filipinos developed skills in agriculture, health, education, transportation, and communication, blending modern methods with local practices to prepare for independence. 

Expansion of irrigation systems under government planning to increase rice and corn production. 

Construction of public hospitals, rural health units, and clinics. 

Improvement of national roads, bridges, and highways to connect provinces. 

Strengthening of the public school system with vocational and technical subjects. 

Wider use of radio broadcasting for news, education, and public information. 

Introduction of motorized fishing boats alongside traditional bancas.