he Italian city-states were a political phenomenon of small independent states mostly in the central and northern Italian peninsula between the 9th and 15th centuries.
After the fall of the Western Roman Empire, urban settlements in Italy generally enjoyed a greater continuity than in the rest of western Europe. Many of these towns were survivors of earlier Etruscan, Umbrian and Roman towns which had existed within the Roman Empire. The republican institutions of Rome had also survived. Some feudal lords existed with a servile labour force and huge tracts of land, but by the 11th century, many cities, including Venice, Milan, Florence, Genoa, Pisa, Lucca, Cremona, Siena, Perugia, Spoleto, Todi, Terni, and many others, had become large trading metropoles, able to obtain independence from their formal sovereigns.
Due to the fallout of WW1 there was a huge inflation of prices and wages along with the end of the war with the extra workers and such not needed plus all of the soldiers coming back caused a decline in employment as factories producing materials for the war effort no longer needed all the extra workers so they were fired the
The reason behind it clearing up by the summer of 1915 is due to all the factory workers that were out of a job found new jobs as other regular factories opened back up with the larger infatuation of people or military personnel coming back enabled more companies to open back up overtime which helped the unemployment numbers go back down as people flocked to the new jobs.
Some goals of this is religious settlement and economic gain. More willing to allow bases for privateers. More motivated by imperial competition with Spain and other nations.