Can someone me out with my homework

Which statement best describes a contribution of the works of nicolas copernicus and galileo galilei?

Review the territory. all land from the bighorn mountains down to south dakota territory. what happened to this territory as a result of the treaty of fort laramie in 1868? it was confiscated by the us government, as a consequence for the battle of the little bighorn. it was given to the us government by the lakota sioux, who got reservation lands in exchange. it was gifted by the us government to the lakota sioux, who viewed it as a sacred place. it was allocated for lakota sioux to settle, but the us government maintained mining rights.

True or false plebeians were the highest social class in ancient rome