Hello,
You need to find the right balance.
Generally, it is advisable to have a large population before advancing to the next age; however, if you wait too long, you will fall behind in technology.
That said, a larger population usually means gathering more resources, so you should have enough to advance (it isn't that expensive).
Best regards,
I always get town phase very late in the game. But at that time I have lots of troops and workers. My pop is up on 200 and i get food and wood very fast. Do I need to save more resources and don't spend that much?
I think, when I said that they replied "not interested" I didn't think like that was exactly what they said. I just wanted you to be aware of that they always weren't interested in an alliance.