In which congressional act did congress exercise its power to create a federal court system?

The people who came to the american colonies in the 17th century had already been exposed to the idea of limited government mainly to the phrase in the declaration of independence stating "that governments are instituted among men, deriving their just powers from the consent of the governed" illustrates the principle of

European expansion into africa left native regimes intact but had a strong impact on local societies what does this mean

Which directions did the mongols travel as they swept across asia and europe