More and more people were drawn to towns and cities. Meanwhile, the Crusades had expanded trade routes to the East and given Europeans a taste for imported goods such as wine, olive oil and luxurious textiles. (Hope this helps!)
Started spreading virus such as ecoli
1- Great khan
2- the Himalayas
3- mercy
4- slow moving
1 mm = 0.0001m
450 x 0.001 m = 0.45 meters
