According to the Article, what caused a 12-year economic crisis in Egypt? The value of gold plummeted after Mansa Musa took control of Mali and most of the world's gold supply. The value of gold plummeted after Mansa Musa flooded parts of Africa with it on a trip to Mecca. The value of gold plummeted after a series of civil wars divided the empire and much of the gold disappeared. The value of gold plummeted after a series of less-than-awesome leaders taxed all the trade that took place