Rainfall increases further south in the Sudanian Savanna , also known simply as the Sudan , a belt of taller grasslands and savannas .
Rainfall increases further south in the Sudan , a belt of taller grasslands and savannas .
Ruth Landes ( October 8 , 1908 , New York City -- February 11 , 1991 , Ontario , Canada ) was an American cultural anthropologist best known for studies on Brazilian candomblé cults and her published study on the topic , `` City of Women '' ( 1947 ) .