I mean you don't have any clue about how and why Russia become largest country in the world.

I'll try to explain it as simple as possible. How it is happened in overhelming amount of cases:

Some enemy attack us to take what's ours. We have a good fight. Enemy surrender. We become friends. Then ex-enemy beg to join us. Because joining us is the only way to get access to all our riches. Next enemy become jealous to our grown riches and come to take what is ours. History repeats. Simple as that. As you could easily see, this approach is much more effective and reliable than that western "colony" idiocy. Western empires all came and gone while Russia grows.

In rare cases when enemy is stupid enough to not join us after the fight, enemy runs away, as far from us as possible. Like it happened with Khazarian Kaganate f.e.

Meanwhile, could you name a single etnicity who was subjugated and whose culture was destroyed as they joined us?

We are not West. Those who join us get all rigths that exist in our commonwealth. And often get much more than they ever could provide.

Even Jews who still owes us for largest population loss after their Bolshevik Revolution are, suddenly, not subjugated and their culture is not destroyed, despite all their attempts to provoke us for that. There is only two states in the world where Hebrew is official state language. One is Israel. Guess where resides another one?

And, meanwhile, Jews still owe us. Whether we will finally come for repayment of this enormous debt or not is completely on them. Just keep in mind two very important things. First - we don't like when somebody offend our friends. Second - do not forget that we are the only existing country in the world that once completely defeated Jewish state - insanely aggressive and arrogant Khazarian Kaganate. And we could easily repeat.