This is the 3623rd most frequent Polish word.
europę
"Europę" is the accusative form of "Europa," meaning "Europe."
Here, 'Europę' is the accusative form of the noun 'Europa', used as the object of the verb 'odwiedzić'.
Odwiedziłem Europę w zeszłym roku.
I visited Europe last year.
In this case, 'Europa' is in the nominative form as the subject of the verb 'jest', showing the region's attributes.
Europa jest pełna historii i kultury.
Europe is full of history and culture.
Here, 'Europy' is in the genitive case, indicating a possessive relationship ('mapa Europy' translates to 'map of Europe').