whilst that’s certainly 1 interpretation, there’s also a bunch of other facets
what people are usually referring to is cultural similarity
it could be argued that said cultural similarities is due to imperialism, but almost all of human history is imperialism if you look deep enough and it’s not useful to just label everything like that
in fact, using imperialism in an over-broad way blunts any discussion on the very real, and to-this-day continuing effects