Answer: Functionalist perspective
Hope that helps! Have a good day :)
The scenario given above is an example of criterion
validation. The criterion validity is a way of measuring an outcome related to
it or it is a way of having to gain statement about a behavior of an individual
and what would likely be the result base on his or her answers.
It granted citizenship to all people, including African Americans.
I believe the answer is:
The Affordability Of Cell Phone Service
The widespread availability of the Internet in homes
Before these two exist, it is difficult for people to obtain new information and contact other people in different regions. After the development, we could even easily contacted other people in different countries and the flow information could happen with one single touch from our hand