Národnímu
The word "národnímu" is the dative singular form of the Czech adjective "národní". "Národní" translates to "national" in English. Therefore, "národnímu" is used when referring to something in a way that is directed towards or benefits the nation. It often appears in phrases indicating possession, purpose, or association with the nation.
For example, in Czech grammar, the dative case is used to indicate the indirect object of a