Once again: just three? A bit disappointing, perhaps, that it’s not ten. 
Define ‘everyone’.
As far as I’m aware, it’s considered a historical reality, adequate for its time, although not for present, of course, since times change after all.
Oh, one more small thing: the world is not black and white, and what’s ‘good’ or ‘bad’ is often down to… just the current social consensus, more or less. In this light, labelling something thus outside its historical context doesn’t make much sense.
‘Progress’ is very… relative. Who was this author that wrote something like this: if cannibals start using forks and knives (for eating their particular… diet, that is), is that progress?
Humanity has certainly developed a lot of ‘forks and knives’, but at its essence, especially if you consider the empathy you speak of and human nature in general… Sure, from owning people’s bodies (slavery), we have transitioned to owning their land (feudalism) and subsequently their materialised labour (i.e. capital), mostly because it has been technologically feasible to do so, but what’s different if you look at the core and not just the very exterior wrapping? If you ask me, a stupid question like ‘Tell me about yourself… What are your strengths and weaknesses?’ by some HR pr*ck, for example, is no different from checking the teeth of your potential purchase on a slave market or feeling it (sic) up, and definitely no less dehumanising or degrading — it’s just more pragmatic to do it slightly differently according to modern… parameters and technological requirements.
Besides, if you read some literature pieces that are hundreds or thousands years old, you’ll realise that the human nature hasn’t changed.
The view of our ancestors as uncouth barbarians is a very simplistic and misguided one.
Told you so. 
That’s something called neophobia in ethology (relevant also to wolves, for example, and others)… And yeah, speaking of ‘progress’ in terms of human nature, as opposed to their technologies. 
(Updated and edited a bit)