What region of the world are crackers that contain sodium salt of glutamic acid as seasoning most commonly found?
Fish cracker:  Fish crackers can be found in Southeast Asia and East Asia. Monosodium glutamate: Monosodium glutamate (MSG, also known as sodium glutamate) is the sodium salt of glutamic acid, one of the most abundant naturally occurring non-essential amino acids. Monosodium glutamate is found naturally in tomatoes, cheese and other foods.
Southeast Asia and East Asia