For the first one: executive
For the second one: executive
For the third one: executive and legislative
The last one: legislative/congress
Oligarchy is a limited type of government
Perhaps the greatest societal change that took place between these two periods was WWII--meaning that after the war in the 50s, America was more likely to ask itself the tough questions regarding race and the role of women, since blacks and women had worked so hard to help the US during the war.
The explanation to your question is in the photo. Hope this helps ^^
