wassup guys question when u finish the game do the other nations open for use ore u can only use the preset ones...
Unfortunately not. All the nations that are available at the beginning of the game, will be the only nations available to you through your Empire Total War gaming life.
However, there are some possitive exceptions to this;
1. You can unlock the US after you complete Episode 3 in the Road to Indepence, but only for a short campaign, and they will not be available as a nation in the Grand Campaign.
2.You can visit this Link and for a mod that allows you to unlock any nation in the Grand Campaign. Be careful though, if you select a nation that does not have an starting country, the game will crash. Always remember to back up your files before modding.
At the Main Menu, choose Single Player then Play Battle and select Land. Setup a quick game with any settings, but pay attention to what Time Period you select (Early/Late) as this obviously reflects what units you can see.
Now, on the next screen, just flick through the list of countries and you can see what unit's they have available. This is a useful trick I did before starting my very first campaign.
Thanks Merceaa, that's exactly what I was looking for.