How to solve this problem with Age of empires 3 with expansions?

I have all the installations of age of empires 3 and all the installations. But may i know why when i play age of empires 3: The asian dynasties, I can't choose the 3 hometown from The Warchiefs expansions? They say i can play with aztecs and spanish as well in Asian dynasties, but how come i can't see them when i play asian dynasties? can anyone tell me?