This document provides a summary of each chapter in the book "Mexicanos by Manuel E Gonzalez" which discusses the history of Mexicans in the United States from prehistory to the present. Some key points covered include the Spanish conquest of the Aztecs in the 1500s, the Mexican-American war of 1848 which ceded Mexican territory to the US, the period of heavy Mexican immigration from 1900-1930 known as the "Great Migration," the rise of the Chicano movement in the 1960s-70s advocating for civil rights, and recent trends of the growing Mexican population in the US now exceeding 47 million people.