történelmük
Történelmük is a Hungarian noun phrase meaning "their history." It is formed by combining the noun történel- (a form of történelmet, the stem for history) with the third-person plural possessive suffix -ük, producing a single word that denotes history belonging to a group. In use, it can function as a subject or an object in a sentence, and it may appear with the definite article: A történelmük.
The term refers to the historical experiences, events, and development of a particular group—such as a nation,
Grammatically, történelmük follows standard Hungarian possessive construction: the base noun történel- plus the possessive suffix -ük
See also: the related forms történelme, történelmünkhöz, and the contrast with történet (story) and történelem (history