This is the 1222nd most frequent Swedish word.
historiskt
Historically.
Here, 'historiskt' is used as an adjective describing an event or situation that has significant historical importance.
Det är historiskt att vårt land har blivit självständigt.
It is historic that our country has become independent.
The word 'historiskt' is used here as an adverb, providing context about time and perspective from a historical standpoint.
Historiskt sett har mänskligheten alltid strävat efter utveckling.
Historically, humanity has always strived for development.
In this sentence, 'historiskt' is again an adverb modifying 'värdefulla', emphasizing the historical importance of the heritage.