Love the bio of Scotts. I know this may belong somewhere else but here goes anyway, How do I make all fashions playable in vanilla 1.2?

I am am my first campaign and I am the English. I chose the English because, I can remember the names better and thus more easily role play.

The problem I have encountered is that I was trying to role play and just recently checked my mission status and it appears that I no longer have time to complete the mission to get more factions. Of course I am still trying to complete the mission but with a less diplomatic strategy.

I would love to unlock other factions instead of have to complete another campaign. I want to be the Scotts.