The third part of the book deals with the American colonial period, which lasted from 1898 to 1946. Agoncillo analyzes the impact of American colonialism on Philippine society, including the introduction of English as a medium of instruction, the development of modern infrastructure, and the exploitation of Philippine natural resources.
For those interested in reading Agoncillo's work, the updated 2021 edition of "The History of the Filipino People" is available for download in PDF format. Readers can access the book through various online platforms, including online libraries, academic databases, and e-bookstores.