I'm playing RtI4. At the beginning the adviser suggests buying land from Spain and France. Cool, I agree, better not to make war with your few friends. I tried to buy Florida before the Cherokee inevitably take it and my offer of 18,000 was rejected.

Hmm, Okay...

But now I wiped out the Iroquios and the Cherokee. All that's left on the eastern half of the mainland is France and England. I go to buy lower Louisiana for 38,000 and it's rejected outright.

Has anyone EVER managed to buy territory from other nations?