Which enlightenment philosopher introduced the idea that people enter a social contract with the purpose of maintaining order in society? thomas hobbes john locke william blackstone charles-louis montesquieu

Thomas Hobbes was the one who introduced the idea to the masses, but it was thoroughly descibed and explained by John Locke and Jean-Jacques Rousseau later. These theories were very useful in establishing republicanism and democratic values in numerous countries, most noticeably the US and France.