How did trade contribute to the spread of the plague in the 1300s?
a)trading vessels from the americas brought the plague to london, where it spread across europe.
b)trading caravans from mongolia brought the plague to rome, where it spread across europe.
c)trading caravans from russia brought the plague to barcelona, where it spread across europe.
d)trading vessels from china brought the plague to sicily, where it spread across europe.

The Black Death was an epidemic transmitted by rat fleas that killed about a third of the population that inhabited the European continent in the mid-fourteenth century. It is estimated that the Black Death arrived in Europe through the Silk Road craft, which brought goods - and rats - from China and initially manifesting in Sicily about 1347 and spreading rapidly throughout Europe.

so they can defeat there oppenent

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.