This is the 1131st most frequent Russian word.
азербайджане
"In Azerbaijan."
In this sentence, "Азербайджане" is used in the prepositional case to indicate location, meaning 'in Azerbaijan'.
Я жил в Азербайджане два года.
I lived in Azerbaijan for two years.
Here, "Азербайджане" is in the prepositional case referring to the location 'in Azerbaijan' in a statement about cultural diversity.
Культура в Азербайджане очень разнообразна.
Culture in Azerbaijan is very diverse.
Although not directly using "Азербайджане," this sentence shows a related context where 'Азербайджану' is in the dative case, illustrating another grammatical usage.