[LowTaxesEqualProsperity]

And Poland also took part of Lithuania, after issuing an ultimatum to them, before the war started, if I recall correctly.

[lizol]

And Poland also took part of Lithuania, after issuing an ultimatum to them, before the war started, if I recall correctly.

You recall it wrongly.

Actually - in the early 20s Poland took territory, that both nations considered as belonging to them (around Vilnius).
Because of that - relation between both countries during the intrebellum period were tense. The had no diplomatic relations.
In 1938 Poland issued an ultimatum - demanding, that Lithuania agrees to establish diplomatic relations with Warsaw. The establishment of diplomatic relations meant a de facto renunciation of Lithuanian claims to the region containing Vilnius.

So - Poland did not take any part of Lithuania in 1938.