Fortress Defiance was set up on September 18, 1851 lead by Edwin V. Sumner to make a military nearness in Diné bikéyah. Sumner separated the stronghold at Santa Fe for this reason, making the principal military post in what is presently Arizona. He cleared out Major Electus Backus in control.
<span><u>The cold war</u> began between Russia and the United States of America in 1947 which was caused by the end of World War II and would last until 1991. During this time the two countries fought to gain power of a different sort as opposed to the war that had just ended, resulting in many intellectual races to prove who was the most superior.</span>
