Italian towns: tourism and change of names

Italian towns: tourism and change of names

The Beautiful Country (Italy) is renowned for tourism: from the culinary to the historical, every year there are many visitors coming into the country. And most of them fall in love with it.

Among the places that every year are immortalized by shots of visitors and tourists, there are some that have changed their name through the years. For example, there are 784 towns that did so after the unification of Italy. And which were the consequences?
Yes, the increase of GDP.