Explain the importance of the city of eridu in sumerian culture. what name was often given to the city?

The city of Eridu features prominently in Sumerian mythology, not only as the first city and home of the gods, but as the locale to which the goddess Innana traveled in order to receive the gifts of civilization which she then bestowed upon humanity from her home city of Uruk  

It was considered the very first city in the world by the Sumerian culture. It is called the City of The First Kings

The answer is c. religion

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.