Each time you start the game you are given the option of what continent you wish to establish your base on. Each location has its own bonuses that can affect certain aspects of the game, but overall there is no great difference with each location.
This will take 5 playthroughs to unlock as long as you choose a different starting location with each new game. How you play and progress through the game is entirely up to you but be aware that you need to win the game. Having more than 8 countries pull out of the council will result in a loss and void that particular playthrough for this achievement.