today western european countries have what form of government
Europe The political map of Europe is substantially derived from the re-organisation of Europe following the Napoleonic Wars in 1815. The prevalent form of government in Europe is parliamentary democracy, in most cases in the form of Republic; in 1815, the prevalent form of government was still the Monarchy. Europe's remaining eleven monarchies[190] are constitutional.
History of democracy The concepts (and name) of democracy and constitution as a form of government originated in ancient Athens circa 508 B.C. In ancient Greece, where there were many city-states with different forms of government, democracy was contrasted with governance by elites (aristocracy), by one person (monarchy), by tyrants (tyranny), etc.,