Fifty years before this and after the Civil War in 1865 we murdered and slaughtered the last of the remaining American Indians in the Western half of The United States and put the survivors on Indian Reservations and their children in Catholic Boarding Schools.
World War Two: September 1, 1939 – September 2, 1945
World War Three: July 4, 2016 -
We were still essentially on horseback and wagons and cannons and war ships in 1914 with rifles and bayonets and with no radio communications except Morris Code which took wires connected to communicate.
World Population was 1,700,000,000
That's one point seven 1.7 billion people on the planet earth.