Rome
Rome.
Rome was such a city state and created the Roman Empire which not only took over almost all of Western Europe, but took over the whole Mediterranean region and beyond.
No one city or state has ever controlled all of Western Europe. The Roman Empire, which divided into the West Roman Empire and the East Roman Empire, came closest in antiquity, but it never controlled Central Europe or Northern Europe. The Carolingian Empire came closest in the Middle Ages, but it never controlled much of Spain or Southern Italy and never controlled any of Britain or Scandinavia. The only other state that came close was Nazi Germany, which never controlled Spain, Switzerland, Sweden, or Britain.
By the fall of 1940 Germany controlled most of Western Europe. The countries under German rule include but are not limited to France, Belgium, and the Netherlands.
Charlemagne
roman
The Roman Catholic Church.
Nobody ever controlled the whole of Europe, not even the Romans. They controlled continental Western Europe up to the River Rhine and southern Germany, England and Wales and the Balkan Peninsula in south-eastern Europe. The first people to be in control of most of continental Western Europe after the fall of the western part of the Roman Empire were the franks when their king established what historians have called the Carolingian Empire.
Romans
The Moors.
It didn't. At the end of WW2 a block of communists countries was formed in Eastern Europe. These were controlled by Moscow. The countries that were blocked were western and NATO countries.
Spain was the largest country in Western Europe from 1580-1640, as they controlled all of the Iberian peninsula at this time. However, from 1640 until today, France has been the largest country in Western Europe.