The Alliance colonized Concord in the late twenty-second century, over a decade before Contact.  In that time, we still thought we were alone, and it took our colonists four years to make the one-way trip.  They left everything behind to go to a literal new world, far away from home.  By the time I was born a century later, Concord was one of the major colonies, and I stayed to help them build weapons.  I welcome visitors now, keeping them from getting lost.