When Sputnik went into orbit in 1957, America went into a panic. Only President Dwight Eisenhower retained his composure and understood that the United States was far superior to the Soviet Union in scientific research as well as in military firepower.
Cattle drives in the western United States largely ended in the late 1800s due primarily to a combination of barbed-wire fences and the new convenience of the railroad.
C. Democrats.
The rest do not work in this time period.