JUSTIFICATIONS
1) Jackson preached that the Indians were ultimately uneducated, and this would cause violence with their white neighbors—he would not stand for this.
2) Jackson stated that the Indians had an unreliable source of revenue: they made money through agriculture, but they didn't currently have enough land to make it a reliable source of income.
3) The Cherokees and other Indian nations were not independent nations; they were "'domestic dependent nations'" (John Marshall) and we're subject to the decisions of the U.S. Government.
Overall, the Indians were the biggest losers yet again; no matter how much they persisted, they were forcibly uprooted from their homeland and placed in an unfamiliar place. Even though they were considered civilized, America didn't treat them as capable human beings.