Again, John R came out with a great opinion of his that I wholeheartedly agree, to some extent.
To be honest, what he says is true, and it had happen before. However, you as the player decide whether you want that to happen, or you want it to be of something else.
In simple words, even if you're in a fed, it's not like everything is out of control. Fed is about people connecting with each other, and that people includes you.
So to be in a fed means to be part of the collective decision making... unless you prefer to be a sleeping partner. So, the responsibility is greater with numbers, but the strength is greater too.
Now, if you find yourself voiceless in a fed and that fed tends to bring more harm than good to you... why are you still in there? You have the right to choose your friends, and so does the people you want to be in fed with.
Okay, as not to be sidetracked, in your case Michael, why did I think that being solo might be the reason of the invasion?
1) You're a new player
2) You don't have that many slave compared to Danneh
3) Your military points might be lower than Danneh in the first place
Vets have the advantage of being here long enough to build up their strength and experience. Newbies, with the exception of few, lack both. Fed is a shortcut way to attain strength (at least in number) and may help you with experience. BUT, choosing the right fed and the right friends are important.
Anyway, that's just my opinion - a newbie in this game as well. I'm still learning, and I must say that I learned something from this event as well.