Using propaganda.They down each other and feed the people what they want to hear and Million see this on facebook.
Machine Guns, Artillery Fire, and Mines
The world wars. Mainly World War II when the United States earned the name the arsenal of democracy. At that time, Americans were beginning to believe that the world NEEDED the USA and that democracy had to spread throughout the globe. This led to the Korean and Vietnam War because American citizens felt obligated to be involved, at least in the beginning.