This is the 15759th most frequent Turkish word.
ticaretinin
"Of its trade" or "of the trade."
"Ticaretinin" is used here to indicate possession in a genitive structure: the rug trade belonging to the region.
Bu yörenin kilim ticaretinin köklü bir geçmişi var.
This region's rug trade has a long-established history.
"Ticaretinin" is again demonstrating possession, specifically the olive oil trade associated with the country.
Ülkedeki zeytinyağı ticaretinin hızla büyüdüğünü gözlemliyoruz.
We observe that the olive oil trade in the country is rapidly growing.
Here, "ticaretinin" signifies the ownership of the trade by seafood, similar to previous examples.