The Salieri-Morello War (1930-1935) was a conflict between the Salieri and Morello crime families that took place in Lost Heaven. In 1930, nine years after the forming of both families, Don Morello decided to expand into Salieri's territory and started attacking both Salieri's men and businesses. Salieri considered this an act of war even though it wasn't openly declared. The war continued for five years, with both factions continually losing men and money. Finally, in 1935, after a failed assassination attempt on Salieri, the mob war was openly declared. Salieri then plotted a chain of assassination attempts on the Morello family's key figures.