"Land of the Four Quarters" or Tahuantinsuyu is the name the Inca gave to their empire. It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia to Chile ...

Decline Of Roman And Byzantine Empires 1,400 Years Ago May Have Been Driven By Climate Change. ScienceDaily . Retrieved June 4, 2025 from www.sciencedaily.com / releases / 2008 / 12 / 081205171005.htm ...