Most cities were parts of countries and did not have real independent power. Venice was one that was independent, and was probably the most powerful of those.
There is a link below.
Charlemagne was without doubt the most powerful man in western Europe in the Early Middle Ages. He ruled a country that included most or all of current France, Germany, Switzerland, the Netherlands, and Belgium, along with major parts of Italy and Austria.
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Vikings
During the early middle ages, 500 - 1000AD, Europe was a frontier land as it was sparsely populated and undeveloped. ;P
Roman Catholic
the united kingdom and states of great britain
Charlemagne was without doubt the most powerful man in western Europe in the Early Middle Ages. He ruled a country that included most or all of current France, Germany, Switzerland, the Netherlands, and Belgium, along with major parts of Italy and Austria.
Most people of Western Europe, for most of the Middle Ages, were linked by a belief in Christianity, in the communion of the Catholic Church.
The cathedrals
clergy
romans
churches
Charlemagne also known as Charles the Great or Charles I, was the first emperor in western Europe since the collapse of the Western Roman Empire 3 centuries earlier. Called the Father of Europe, He united most of Western Europe.
The Christian Church was the single most powerful social organization in Europe from the Middle Ages to the end of the Victorian era.
Paris
they took steroids