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.
Rome.
Austria is a country that is in the centre of Europe and would be considered as a western European country.
The Holy Roman Empire.
Carthage was a self-governing city-state. Eventually it was conquered by Rome.
There is no other word for Belgium, it is a federal state in Western Europe.
Railroads made it easier to get to seaports in western Europe
In Western Europe: Andorra, Liechtenstein, San Marino, Monaco etc.
The European Renaissance began in Western Europe, more specifically, in the city-state of Florence, Italy.
Western Europe is predominantly private capitalist, while China is a mix of state and private capitalist.