Serfs Start asking for better jobs to do for better pay, Population of serfs die from the plague..
Scientificly known, the Plague starts from Fleas jumping onto a rat and biting into it, It gives the rat a bad infection which then mixes with the rats diseases from other types of trash's and landscapes it has been in.
Rats Spread around the city as there population grows bigger, They touch food that people eat which causes a person to get the Plague..The simptoms of the Plague are 1:Throwing up, 2: Coughing up blood, 3: Buboes on your body preferibly right where your Arm pit is, 4: Buboes burst, 5: Skin turns black, 6: Death.
Churches send off non trained people to fight for war.
Serfs population die as the Rats spread the plague around the Roman Empire, The Serfs start asking for better jobs to get better pay because of how many people had already died, "less people more work" as they say.
The ones who protect the Roman Empire known as the knights die from the plague, which lowers the amount of defense for the roman empire.
Churches told people(Christians) that if they fought in the war they would go to heaven for dying as a fighter.
Enemies started using dead bodies of others who had got the plague as weapons, also known as BOMBS!!.It was a death trap for both the enemies and the enemies target, as the plague spreads pretty quickly onto a person.