The state of Oklahoma had many reservations back then. Therefore, I believe that in<span> the late 1800s, the federal government attempted to place all plains Indians on reservations, most of which were located in the state of Oklahoma.
During this period, the main ancestors of the US were forcibly moved to reservations. This made their territory restricted severely compared to the time when they were free to move anywhere. </span>
Black codes were restrictive laws designed to limit the freedom of African Americans and ensure their availability as a cheap labor force after slavery was abolished during the Civil War
My guess on this question would be : Cold War .During Cold War USSR and USA were investing huge money in defenses and military technology to show each other they are powerful. Though its called Cold 'War' there was no war. There were no fighting. Just show.
