Do You Think Leaders Are Born Or Made Or Both (born And Made) Or Exclusively Bot

Frankly, do you think leaders are born or made or both (born and made) or exclusively both (some are born and others are made)? Looking at Nigeria, are we lacking leaders most or good followers most? Do you see Nigerians as a major cause of our predicament or some very few Nigerians and the foreign over ambitious countries?
Do well substantiate your hold.