"... With America's sons in the fields far away, with America's future under challenge right here at home, with our hopes and the world's hopes for peace in the balance every day, I do not believe that I should devote an hour or a day of my time to any personal partisan causes or to any duties other than the awesome duties of this office-the Presidency of your country. Accordingly, I shall not seek, and I will not accept, the nomination of my party for another term as your President. ..." - President Lyndon B. Johnson, March 31, 1968 Q7: The decision announced in this speech was based primarily on the (1) assassination of Martin Luther King Jr. (2) growing Violence in urban America (3) outbreak of terrorist attacks around the world (4) involvement of the United States in the Vietnam War

The decision announced in this speech was based primarily on the (4) involvement of the United States in the Vietnam War.