Look at it this way, the people that conquered this land use the sword and gun to subjagate the Native populations, this method was an engine of the devil, this is the negative part. What made it positive it bought Christianity to Native Americans. Slavery for Black people is a stain on the honor and integrity of the U.S.A. but it's redeeming value was that primitive Black people were exposed to the Truth and many became Christians, remember Islam enslaved them. Now the beneficiaries were the subsequent generations of this nation, compare the opportunies and standard of life that Americans of African decent have to pure Africans. Remember also that Indians had to survive in an ever progressive country, they had not the vision of the future or they would have bowed down and the U.S. government only kept a promise to the benefit of itself and this was called progress.But to grasp the importance of this is to see what this world is about.