The Inca road system is an admirable feat of engineering, and it served several important functions for their Empire.

Nov 6, 2006 - John Crandall

The Incas divided the Inca Empire, or Tawantinsuyu, into four parts: the Chinchaysuyu, Antisuyu, Cuntisuyu and Collasuyu regions of the Inca Empire map.

Dec 19, 2010 - Tony Dunnell

In Tiwantinsuyu, the empire of the Incas, spindles and looms were just as important as spears and shields.

Aug 2, 2008 - Colin Forsyth

Ancient roadways, like their modern counterparts, served to increase commerce and trade while providing mechanisms linked to military success and national defense.

Feb 12, 2009 - Michael Streich

Fire has always been humanity's greatest friend and most dangerous foe, providing warmth and security, but also posing great danger and destruction.

Jul 14, 2010 - Brenda Ralph Lewis

Two members of the Surratt Society have made a stunning announcement: Abraham Lincoln's assassin, John Wilkes Booth, may have indeed died by his own hand.

Feb 10, 2012 - Rick Stelnick