Answer:
Europe is called peninsula of peninsulas because there are several peninsulas in Europe.
Step-by-step explanation:
A peninsula is a landmass covered by water from three sides and is connected to land at the fourth side.
The continents Europe and Asia form the Eurasian landmass and Europe is located at the western side of this landmass. Europe itself is a peninsula.
Europe has various peninsulas like Iberian Peninsula, Scandinavian Peninsula, Italian peninsula etc. Since there are a number of peninsulas within Europe it is called a peninsula of peninsulas.
Italian peninsula is located at southern Europe and Balkan peninsula is located at Eastern Europe.