hey i made my castle and upgraded all the way to large castle but i cant upgrade that into city walls

yes it is

but how do you become officially allied where they attack our enemies?

That pretty much speaks for itself does anyone know?

So i've been playing Spartan for about a year as the Lacedomians and for some reason no matter WHAT i do, i cannot ward off the Persians. Sometimes i get sick of them so i march over with my 16 unit elite hoplite spartiates and conquer half there empire and then in 10 turns it says "Invasion!&q...