This is the 7880th most frequent Polish word.
ministerstwem
"Ministerstwem" means "ministry" (a government department).
The word 'ministerstwem' refers to the institution responsible for legislative or administrative actions in this sentence's nominative case form 'ministerstwo'.
Ministerstwo ogłosiło nowe zasady dotyczące programu edukacyjnego.
The ministry announced new rules concerning the educational program.
The term 'ministerstwem' in this context is in its instrumental case following 'przez' (by), to indicate the agency of approval.
Projekt został zatwierdzony przez ministerstwo.
The project was approved by the ministry.
Here, the word 'ministerstwem' is used in its instrumental case after the preposition 'z' (with), denoting a connection or interaction with the entity.