History /
Norman Davies - the Brit who loves Poland and becomes one of Us [250]
Kraków pozostał jednakże oficjalną stolicą Rzeczypospolitej
The capital is the city where the parliament is located:
...a capital is almost always a city which physically encompasses the offices and meeting places of the seat of governmentand is usually fixed by law or by the constitution.
en.wikipedia.org/wiki/Capital_city
So, where was Sejm located?
The Constitution of the 3rd May was adopted in Warsaw in
1791. The parliament was there before too. That the king liked to spend more time elsewhere is not an indicator of a capital, moreover with liberum veto handy - everyone was a semi-king anyway.
The first constitution mentioning the capital of Poland was the 1952 constitution.
English became recently an official language of the US, if I recall correctly. So, what language was spoken before in the USA? French? The constitution only finalized was wasn't that necessary or thought of before. The older constitutions concentrated predominantly on the rights of the citizens than on the administrative issues.
Warszawa była oficjalnie nazywana "Miasto Rezydencjonalne Jego Królewskiej Mości."
Exactly, this is what it was - but not a capital.