Social contract
The concept of social contract stated the government maintained power only at the consent of the governed (the citizens).
John Locke was an Enlightenment thinker who argued the government was at the service of the citizens. The government was allowed to continue governing as long as the people agreed to the government. Under this theory, the citizens had the right to overthrow or change their government if it was not meeting the needs of the group. This social contract ensured the rights of citizens were protected, not taken away by the government.