This is the 803rd most frequent Serbian word.
постала
"Постала" means "became" in English.
Here, 'постала' is used to indicate a change in state or becoming.
Она је постала учитељица ове године.
She became a teacher this year.
In this case, 'постала' describes an improvement or development in skills.
Ђак је постала јако вешта у рачунању.
The student has become very skilled in arithmetic.
Here, 'постала' is used to state that the idea has assumed more significance.