a serf is a person who worked on the lord manor and make food
Venice was one of Europe's most important trading cities and one of its greatest ports. Its most important industry of the Middle Ages was probably shipbuilding, which became so advanced and active that they had assembly lines mass producing ships.
Electronic payment systems were not preferred in the Middle Ages. The middle Ages did not have any computers, so electronic payment systems were not invented yet.
There were a number of plagues during the Middle Ages. The one you are asking about is most likely the Black Death, which arrived in Europe in 1347 and went on for five years or so. The Black Death was one of the most important events of the Middle Ages and had a profound effect on society. Another important medieval plagues was the Plague of Justinian, in the 6th century.
Many cities were important in the middle ages for very different reasons. Some cities, such as Constantinople (modern day Istanbul) was important in defending the so-called "Christian" countries from Muslim invaders. Others, such as Paris or London, were important economic centers for their respective countries. Still other cities were (and still are) important religious sites, like Jerusalem and Mecca.
because a farmer needed someone to talk to too forgive his sins
There was one church and one religion in the middle ages and that was Catholic. So, any timeline would be of the Catholic Church.
The Catholic Church was the only church in the Middle Ages and the pope ruled the church and monarchies of Europe.
because it just was.... now go get a life and go to upper mahattan and find out now
Because religion was so important during the Middle Ages, most people owned Bibles.
The Middle Ages were also called the Age of Faith.
The Catholic church was the only church so any religious celebrations or services were Catholic.
I am not sure the Church was "hard" during the Middle Ages. The Church spent a lot of energy providing for the sick and poor, giving people refuge, representing the needs of the poor to the kings, and protecting people. There is a link below to a related question, "What was the role of the Church in the Middle Ages?"
a serf is a person who worked on the lord manor and make food
There were times in the Middle Ages that popes tried to stop wars. The Church also tried to regulate wars so as to make them more humane.
because god said so
because at the middle age you can differentiate between good and bad.