-The Mongols were united by a strong leader, Genghis Khan.
-They were used to the hardships required of empire builders, for example, living the nomadic life, spending long hours on horseback, and so on.
-Genghis was a brilliant organizer who created a mighty fighting force.
-Genghis was a gifted military strategist who ably exploited the enemy's weaknesses and the Mongols' strengths.
-Genghis eagerly adopted the weapons and technology of the peoples he conquered.
-The Mongols used cruelty as a weapon of intimidation. Those who did not give in to them were slaughtered.
-The Mongols were able to maintain control of their vast empire by dividing it into four khanates.
-After conquering their empire, the Mongols imposed peace and stability and encouraged trade