Any comments on these rules? Should I refine them? I'm thinking of making markets like this for other years farther ahead.

Related:

Will Idaho take 10%+ of Oregon’s land before 2030?

11% chance. The Greater Idaho movement proposes that eastern Oregon counties become part of Idaho instead. [image]

When's the last time this happened? (Search engines are failing me.) It's my understanding that the Mississippi River constantly shifts course a little bit, which causes the adjacent borders to wiggle on a semi-regular basis. But I'm not well-calibrated on the frequency or scale of these changes.