Polish Secret State (also known as Polish Underground State; Polish Polskie Państwo Podziemne) is a term coined by Jan Karski in his book Story of a Secret State; it is used to refer to all underground resistance organizations in Poland during World War II, both military and civilian.
The term is used in Polish historiography to denote both armed struggle against the occupying powers and all the examples of underground political, social and educational activities.
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