Books and movies about World War I are not popular because they are depressing. Leaders of world’s great nations destroyed a generation of men in pointless bloody battles. Few Americans realize that World War I was America’s worst foreign policy blunder. Bankers had loaned Great Britain and France more money than they could ever repay. However, if Germany lost, they could demand the Germans pay massive reparations to help pay back these loans. These bankers manipulated American politicians and media to approve American intervention that prolonged the war.