This is the 15933rd most frequent Turkish word.
ulusun
"Ulusun" means "your nation" in English.
Here, 'ulusun' is used to denote 'your nation,' where 'ulus' means 'nation,' and '-un' is the possessive suffix for second person singular.
Senin ulusun çok güçlü bir tarihe sahiptir.
Your nation has a very strong history.
In this sentence, 'ulusun' similarly refers to 'your nation,' emphasizing the belonging aspect with the possessive suffix.
Her zaman ulusun çıkarlarını gözetmelisin.
You should always safeguard the interests of your nation.
Here, 'ulusun' again means 'your nation,' showing singular possession related to the second person addressed.