How do you think Native Americans would have responded to news about the Treaty of Tordesillas and the Line of Demarcation

For Native Americans at the time, it would have been next to impossible to understand something like the Treaty of Tordesillas. This treaty intended to partition tracts of land that the Europeans did not even know whether they existed, an action that may have looked like sheer madness and even dishonorable, for the Europeans claimed possession of lands they had not conquered by the force of their arms. Maybe, after some thought and analysis, Native Americans would have felt outraged as a man living in such a distant place, the Pope in Rome, who had no authority whatsoever for them, made the decision of handing over lands, people, wealth, etc, to two different groups of Europeans. Perhaps, other Native Americans, once they managed to understand that agreement so odd to them, might have found it laughable and it might have prompted them to challenge to take what was their own over their dead bodies.