Individualism is a theory that recognizes the individual as the central part of society and aims to establish that the state should not interfere in individuals' lives so they can determine their own destiny freely. Key thinkers who shaped this view include Adam Smith, Jeremy Bentham, J.S. Mill, and Herbert Spencer. While individualism led to market expansion and lower prices, it also brought drawbacks like economic depressions and worsening living conditions in urban areas due to overpopulation. The conclusion is that pure individualism in government is not possible and no modern state entirely follows this philosophy of keeping the state limited to only police functions.