I used to play this game ages ago but I never got the expansion I just bought it and as it comes with the expansion I now have two .Exe files to launch the game, should I launch from the EE one or the Art of Conquest?

I was hoping Art of Conquest .exe has everything included in the original game just + the expansion is this correct?

I ask because I only want one .exe for the game in my folder and need to know which is better.

Thanks.

Unfortunately, you are out of luck. The game has two separate exe files for base game and expansion (each one has different campaigns).