From which country did the world get most of the terms for the types of government recognized today, including oligarchy and autocracy?

These are mainly all words taken from Greek roots. This is because Greece was one of the first civilizations to adopt systems that focused on the citizens of each polis as a governing body, instead of being ruled by the hereditary few. In addition, however, there were periods in which power was seized and wielded by those who had the means and the force to do so.