Afro-Asian is a term that refers more to a person who is genetically a mixture of Asian and Afro-American than it to a country. There are countries, however, with high populations of Afro-Asians, such as, Kenya, Congo, and Nigeria.
You can't get afro hair if you have straight hair. Vice versa, afro hair into straight hair. Black girls with afro hair can straighten their hair, get a weave or wear braids. You could wear a wig but you can't have natural afro hair unless you are half or fully black.