What are savannas ( in nubia)

Explanation:

Montane savannas are mid- to high-altitude savannas, located in a few spots around the world's high mountain regions, part of the montane grasslands and shrublands biome. The Bogotá savanna , located at an average altitude of 2,550 metres (8,370 ft) on the Altiplano Cundiboyacense , Eastern Ranges of the Andes , is an example of a montane savanna.

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.