This is the 171st most frequent Slovenian word.
hrvaškem
"Hrvaškem" means "Croatia" in the locative or instrumental case in Slovenian.
Here, 'na Hrvaškem' refers to the location (in Croatia) indicating the use of the locative case in Slovenian, triggered by the preposition 'na' and the feminine noun 'Hrvaška' in its proper locative form.
Poleti sem bil na Hrvaškem in užival na plaži.
In the summer, I was in Croatia enjoying the beach.
In this sentence, 'na Hrvaškem' again refers to a place, 'Croatia,' in the locative case. The preposition 'na' combined with 'Hrvaška' (meaning Croatia) dictates this grammatical usage, indicating location or topic.
Razpravljali smo o razmerah na Hrvaškem.
We discussed the conditions in Croatia.
'Na Hrvaškem' denotes the place 'Croatia' in the locative case, fitting its function as the setting of the general statement made in the sentence.