Under fuedalism which group was responsible for ruling different regions of a country

Under feudalism, the Lords,was responsible for ruling different regions of a country.

Explanation:

Feudalism is a type of society and the political system originating from Western and central Europe and dominant there during the Middle Ages.

The Lords had certain roles for the feudal Serving the royal council, providing the King with Knights to defeat any kind of war, providing food and shelter and other necessities to the king, and they had to pay taxes and fees to the king if he needed them.

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.

b because they both had so of the same chosen rules