After World War II, many workers migrated to the northern provinces of Italy to look for jobs in industry.
Explanation:
Italy is the eighth world economic power, and the fourth in Europe behind Germany, the United Kingdom and France. It has an advanced and diversified economy, but this diversification is markedly sectorized, with an industrial, manufacturing and large business north and a south destined for agricultural activities with fewer large companies.
This situation is not new, but has occurred over the years. Cities such as Milan or Turin are major centers of industrial and technological development, headquarters of automobile and computer companies (FIAT, Alfa Romeo, Lamborghini, etc.), as well as global poles of fashion design (Armani, Prada, Versace, etc). On the other hand, the south, much less glamorous, stands out for its small cities and towns that, with few exceptions - Naples and Palermo - do not exceed one million inhabitants.
This economic and industrial importance of the north was the main reason why, once World War II was over, a huge number of southern settlers decided to move from their southern cities to the north, in search of work. The economy of southern Italy, in itself fragile and wobbly, was severely impacted during the Allied invasion, so its inhabitants decided to migrate north in search of better job opportunities.
