The author used the final paragraph of the text to refine her ideas that social networks are important for people to keep in touch.
According to the article, social networks are used by people to keep in touch with their friends and their families. People use social networks to communicate and share political views.
The article further revealed that many users that are interacting online stay within the confines of the social networks that they are familiar with. People also use social media to learn about others in different parts of the world.
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https://brainly.com/question/19298775
