What is the largest religion in the world? a) christianity b)judaism c)baptist d) buddhism

Baptism is not a religion, it's a denomination of Christianity. A is the answer because, well it's a pure fact. Judaism is an ethnic religion, meaning that not a lot of people already follow it, and Buddhism has relatively very less people following it. So, A) Christianity is your answer.

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.