Where do you predict Yersinia pestis would diffuse from Kaffa?

Yersinia pestis is known as the causative agent of plague. Plague is a disease which has vectors such as rodents and fleas. They are transmitted to man when the fleas who have the plague bite man.

It is caused by bacteria and can be transmitted through saliva droplets which makes ships the place Yersinia pestis would more likely diffuse from Kaffa. The ship is usually packed with lots of people from different regions and parts of the world on trading businesses.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.