"Germanic Civilization" has existed for millenia. So has Italian civilization. It goes all the way back to the Etruscans. But let's be honest: they're Romans. And their later accomplishments deserve to be recognized, rather than just their early ones.
The city states period gave us:
(1) the double entry book-keeping accounting method, which arguably led to (2) the birth of capitalism, and (3) the birth of mercantilism.
The papal states were also their own city state, which gives us (4) Rome as a religious-political concept.
Plus we have (5) the birthplace of perspective, which influenced all European art for the next 6 centuries, which is the artistic paradigm that gave us such wonders as (6) the sistine chapel.
Then we have great scientists and thinkers such as (7) Fibonacci, a North African who brought Zero to mainland Italy, and (8) Leonardo DaVinci, who needs no introduction. Besides other famous artists like (9) Michaelangelo, there was also the work of (10) Dante Algheri and the Divine Comedy, or (11) Petrarch, who is considered the father of the renaissance.
Because the renaissance was stimulated by the arrival of Greek knowledge stored by the Arabic Empires, this rediscovery of Greek knowledge stimluated the birth of (12) the Humanist movement. And this paradigm of thought, which was necessarily less centered on religion, influenced (13) Macchiaveli and his infamous treatise known as "The Prince", which was considered a response to (14) the Medici clan, the most powerful clan in Italy at the time and perhaps a reason the region was prosperous enough to create some of these ideas. This is probably a good source for their leader.
Don't forget (15) Saint Peter's Basillica or (16) the Venetian Arsenal. The first one is absolutely iconic for the Roman Catholic faith, while the second one represents the world's first factory -- centuries before the industrial revolution in Britain.
That's just some of the most FAMOUS stuff from the middle ages and renaissance. I could dig even further. I could even get into the industrial age.
Not saying Italy should be included, but certainly the Medicis or Mussolini would make a great additional leader.