Bank role in forex

Dear dosto mera aap sb say yeah sawal hai k kisi bhi mulk ki curruncy ko stable rakhnain k liye bank kis tarah kaam kartay hain agar kisi mulk ki curruncy musalsal gir rahi hai to iski kia wajah hai aur isko stable rakhnain k liye kia cheez bht zaroori hai ...

G han jnb stock exchange k baray maij mujhay thori bht knowlege hai har mulk ka bank koshish karta hai k is k mulk ki currncy down nan jaye or woh stable rajhnain ki har mumkin koshish karta hai kisi bhi mulk ki curruncy us mulk k main bank pr bht depond karti hai jo k usko stable rakhay hoye hotay hain...