There is no traditional or particular thing such as an African drum circle. It is nothing but a drum circle; i.e people gather in a circle (or a closed formation) and play drums. Many African rhythms are used in such musical situations and hence the notion of drum circle started being attributed to Africa. So, ANY nation can (and does in fact) have a historical or culturally specific drumming tradition (case and point, Brazil, many cultures of India and the middle East).