They probably did but AI can't complain in multiplayer-games (even if you only play against AIs), those popups are simply disabled.They never even noticed .
How did you get to zoom out that far?
I was bored because the friend I was playing with was just conquering city states, so I just choose to take over China. And there is no stragety when your bored.One does wonder why there are so many land units on an island map, surely investing in more ships and aircraft would be more effective?