One word substitute is Democracy.Diplomacy: the profession, activity, or skill of managing international relations, typically by a country's representatives abroad.Democracy: a system of government by the whole population or all the eligible members of a state, typically through elected representatives.Socialism: a political and economic theory of social organization which advocates that the means of production, distribution, and exchange should be owned or regulated by the community as a whole.Autocracy: a system of government by one person with absolute power.