Well, I think the game can teach a lot about history, the advantages of collaboration, exchanging knowledge and goods and services, political systems, the importance of research, education and development.
That wars cost ressources and can have negative impacts on the development of societies slowing down positive development.
That achievements of a culture are not static but dynamic and a culture can fall down in development and significance if the positive standards of that culture are not maintained and developed further.
So in my opinion children can learn a lot of important aspects from playing the CIV games.
RE: New Civilization Game Promoted as Educational Tool for Future Leaders