This is the 441st most frequent Azerbaijani word.
olmuşdur
"Olmuşdur" means "has been" or "has happened" in English.
Here, 'olmuşdur' constitutes the past participle of the verb 'olmaq' (to be or to become), functioning to describe a completed past event of achieving independence.
Azərbaycan Respublikası 1991-ci ildə müstəqil olmuşdur.
The Republic of Azerbaijan became independent in 1991.
'Olmuşdur' in this sentence emphasizes a continued state or characteristic in the past, indicating that the brother was consistently a good student.
Mənim qardaşım həmişə yaxşı tələbə olmuşdur.
My brother has always been a good student.
In this example, 'olmuşdur' describes a specific quality of the weather, denoting a state of being cold that has existed in the past season.