This is the 13686th most frequent Turkish word.
kuşatmalarına
"To their sieges" or "to their blockades."
The word 'kuşatmalarına' here refers to the 'sieges' directed towards ancient cities discussed in the history lesson.
Tarih dersinde, eski şehirlerin kuşatmalarına dair bilgiler öğrendik.
In the history lesson, we learned about the sieges of ancient cities.
In this sentence, 'kuşatmalarına' denotes the 'sieges' conducted by the enemy army as described in the author's narrative.
Yazar, romanında düşman ordusunun kaleye kuşatmalarına odaklanmıştı.
The author focused on the enemy army's sieges of the castle in his novel.
Here, 'kuşatmalarına' is used to describe the 'sieges' undertaken in the context of the war period investigated by researchers.