[inglor_cz]

"eventually"

After some 400 years. Most currently existing countries, at least in their contemporary political form, haven't reached this mark yet.

[rich_sasha]

It's more that the collapse was particularly painful for Poles and Lithuanians.

Incidentally, it is around that time that Ukraine got under Russian hegemony too. Not that Ukraine got a good deal under the Polish-Lithuanian Commonwealth: https://en.m.wikipedia.org/wiki/Khmelnytsky_Uprising