Oklahoma farm restructuring occurred throughout the late 20th century, indicative of the rise of corporate .

The fourth comprises the energy boom and bust of the late twentieth century, along with ... The growth of the non-Indian population grew remarkably. ... In contrast, throughout much of the nineteenth and early twentieth centuries ... War II and postwar recovery, and the dramatic restructuring of the farm economy in the 1950s.

Explanation:

bismarck believed in using force

is the correct answer!