The Mongols had a positive effect on the world because of their trade fighting tactics and inventions. Genghis Khan was a good and brave ruler he had a powerful empire with good generals to lead his armies into battle. One of the negatives are that he would kill and slaughter entire villages to take their land and he would save women and children One of the positives is the trade during the Mongol rule. The main trade route was the silk road and for a while the silk road was very dangerous to travel down. But during the Mongol rule, they wiped out most of the clans along the silk road and insisted trade from Japan and other parts of china. Merchants also receive protection from the Mongols. Which in return with produce the spread of ideas