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The participant's changed their answers to conform to the group standard
Every individuals have the inner fear of being outcasted by the other members of a social group.
To avoid this, most people develop the tendency to conform to a group's opinion even if they personally believed in different things.
One of the most known studies that first introduced this tendency to the world is called Asch conformity experiments
The plebeians exercise their rights of citizenships by dividing society Rome into two groups.
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If the American colonists were allowed more control and representation in they British government they most likely would've been satisfied and wouldn't have started a revolution. If there wasn't a revolution the United States might've still been part of Britain today.