Over the past decade, the united states has grown increasing divided politically. the internet permits individuals to communicate only with those who support their views, a process that tends to strengthen the dominant positions held by group members. this process is known as

Group polarization

Explanation:

In psychology, group polarization alludes to members of a group making decisions that are more extreme than their original predisposition. It occurs due to individuals determining their social and personal worth based on comparison to others. In making group decisions, most members take the process on with the thought that their additions are better than those of the other members.

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Group Polarisation is the answer.

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