People have speculated that the Mayan empire has fallen from power by things like overpopulation, extended drought, and wars. Overpopulation means not enough food produced for their people, the drought meant not crops were not as fruitful as they once were and if they were at war their people would not be nourished enough to fight a winning battle.
The Hegira or Hijrah<span> (Arabic: هِجْرَة), also romanized as Hijra and Hejira, is the migration or journey of the Islamic prophet Muhammad and his followers from Mecca to Yathrib, later renamed by him to Medina, in 622 CE.</span>
