explanation in the answer
The Red Scare
Central to the Cold War on the American homefront was the fear that communist spies were trying to destroy the country from within. This fear rose to a fever pitch between 1947 and 1957 during what is known as the Red Scare or the Great Fear. During this time there was a strong attempt to root out communists and communist sympathizers at all levels of society.
During this time period, the federal government and other institutions created loyalty programs. To keep their jobs, or to be hired, employees had to swear an oath of loyalty to the Constitution and to swear that they had never been a part of an organization that had advocated the overthrow of the government. They also had to swear that they would never join any such group in the future. The program went further and required hearings and investigations if someone was accused of being disloyal. Under President Truman the first loyalty program was started in 1947 - affecting federal employees and potential employees. The program soon spread to other organizations, particularly state governments, schools, and universities.
Women, for example, during the WWII did a lot of manufacturing jobs in the US because there was a shortage of men because they were fightng in the war so to keep production going women had to take up the slack in other words it was an opportunity for them. Also, women fought for and gained the right to vote which gave them say in who the government was and also began to run for office in some cases. Women also began to study subjects which had been men's domain before-like engineering, geology etc.
Manifest Destiny summary: In the 19th century US, Manifest Destiny was a belief that was widely held that the destiny of American settlers was to expand and move across the continent to spread their traditions and their institutions, while at the same time enlightening more primitive nations. And the American settlers of the time considered Indians and Hispanics to be inferior and therefore deserving of cultivation. The settlers considered the United States to be the best possible way to organize a country so they felt the need to remake the world in the image of their own country.
A workers can act with speed....
this is true because the bureaucracy members are chosen by qualifications rather than having to be elected
