Wet climate may have fueled Mongol invasion - Technology & science - Science - LiveScience - NBCNews.com: "Beginning in the 13th century, the Mongol Empire spread across Asia and into the Middle East like wildfire, growing into the largest contiguous land empire the world has ever seen.
Historians have long speculated that periods of drought pushed the Mongol hordes to conquer their neighbors, but preliminary new findings suggest that theory may be exactly backward. Instead, consistent rain and warm temperatures may have given the Mongols the energy source they needed to conquer Eurasia: grass for their horses."
'via Blog this'
