Thank you! I made sure to keep imperialist implications at the forefront of my mind while I was brainstorming for this game, so I'm glad to hear you say that since it was easily my biggest worry.
I'll keep in mind your feedback! I tried making the mechanics less confusing by suggesting different colors for different time periods but there's absolutely ways it could be improved. Again, thank you very much. (And yeah, in my mind I can 100% see this as a worldbuilding game as well truth be told.)