The document provides information about key events and factors related to the Vietnam War, including: 1. Increased US involvement was driven by the Domino Theory and desire to contain communism after the French loss at Dien Bien Phu in 1954. 2. Escalating US troop levels and bombing campaigns throughout the 1960s failed to defeat the Viet Cong and North Vietnamese forces, who effectively used guerilla tactics and received support from villagers. 3. Protests against the war mounted in the US as the costs of the war rose without clear progress, hurting public support for continuing the war.