wedsaz,you are correct i forgot to put it on!
Ships Should have two types as seen in World history at that time.
that is still using oars-power with sail and sail power only
warfare of ships should have boarding into enemy ships and capture it and cannon bombarding on each other.
boarding should be used at early ages as the game processes
cannon bombarding then later used as main.
Native Americans
these people should only have Horse archers and only leather armour because they do not use metal things till they barter with european traders with hide for guns.
These people only have flint weapons just like the Aztec and Inca Empires
but later the Natives created axes for war by finding metal or trading with european traders.
Europe
Castles should be in use till the start of cannon as the main siege weapon.
Forts made of wood should be use in AOE III as in the new world and use as scout Forts.
Religion should have two types in europe that is Protestantism and Catholic.
Units
Cavalry should be the mainstay as they start to use handguns.
Janissary soldiers of the Turks should be upgraded with Guns
and sword which they use gun to attack long range and sword for hand-to-hand fighting.
Cannons should be able to put in castles and New world Forts made of wood to be able to protect itself.
Movement
it should have types of movement
not only walking but charging that increases attack and speed at the enemy.
"know yourself and your enemy and you will never
be defeated in 100 battles."
-Sun Tzu-