Questions & Answers about Ovo područje je veliko.
Because ovo has to agree with područje, and područje is neuter singular.
In Croatian, words like this change form depending on gender, number, and case:
- ovaj = masculine singular
- ova = feminine singular
- ovo = neuter singular
So:
- ovaj grad = this city
- ova kuća = this house
- ovo područje = this area
Here, ovo matches područje.
A very common clue is the ending -e or -o in the singular nominative. Many Croatian nouns with those endings are neuter.
So područje is a neuter noun, which is why it takes:
- ovo for this
- veliko for big
A dictionary will usually mark it as neuter, but the ending is already a strong hint.