IIRC the Klingons were a spacefaring people with FTL capability at least a century or two before humans. At that kind of tech disparity it would be a very easy takeover.
And Earth is less than a week away from Qo'nos at low warp, apparently. It seems almost impossible they missed Earth. And yet they somehow did, obviously.
And Earth is less than a week away from Qo'nos at low warp, apparently. It seems almost impossible they missed Earth. And yet they somehow did, obviously.