So Jews could be easily identified so they could be persecuted and to arrest them easier.
They caused inflation to rise.
(Just had this question on my test and noticed nobody answered. Sorry it was late)
The correct answer is cars.
The development of the Eisenhower Instate System during the 1950's resulted in the creation of an enormous amount of interconnected freeways and highways throughout the United States. With these new roads available, there was a significant increase in buying cars. This is because now citizens could travel from city to city and state to state on a much easier basis than ever before.
I'm not sure if I remember correctly, but I believe it's C.) Passing laws that apply to actions taken before the law was passed.
Electoral since any candidates can have the majority aka popular vote but can still win if they get most electoral college votes