This is the 15712th most frequent Russian word.
присоединенные
"Joined," "attached," or "annexed."
Here, 'присоединенные' describes objects (documents) that have been attached or appended to something else.
Присоединенные документы должны быть проверены.
The attached documents must be verified.
In this sentence, 'присоединенного' is used to describe a district that has been annexed or joined to another region; it functions as a past participle.
Жители присоединенного района обратились с просьбой.
The residents of the annexed district made a request.
In this example, 'присоединенные' modifies 'комментарии', referring to comments that have been attached or added specifically to the task.