What are the attributes of a monarchy

Monarchy can take many forms, for example right now both Sweden and Saudi Arabia are monarchy!

I would say that the major attribute is that there is someone called "monarch" (king/queen or equivalent) who is the representative of a country for life, or until their abdication. This person may or may not have actual power and influence into the affairs of a country.

The answer is eastern europe

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.