As world’s Currencies’ worth is changing rapidly but recently in March 2018, the world’s cheapest currency against USD is_________? August 9, 2021April 28, 2018 by admin As world’s Currencies’ worth is changing rapidly but recently in March 2018, the world’s cheapest currency against USD is_________? A. Iranian Rial B. Vietnamese Dong C. Indonesian Rupiah D. Guinean Franc