You also got to remember that the country is a very young democracy.

In Italy, the phrase Years of Lead (Italian: Anni di piombo) refers to a period of political violence and social upheaval that lasted from the late 1960s until the late 1980s, marked by a wave of both far-left and far-right incidents of political terrorism and violent clashes.
Part of the Cold War

You are welcome.Hope you find it useful.

Another thing that might possible be a factor of how the mafia or camorra spread to Calabria ,Apulia,etc, might be according to their dialects,or language.

This might not mean much,but the dialects of Campania,Molise,Soyh Abruzzo,South Lazio,Basicalata,upper Apulia,Northern Calabria are said to be part of the Neapolitan Language
According to Wikipoaedia, Dialects of Southern Calabria,Southern Apulia,and Sicily are said to be part of the Sicilian Language ,along with a dmall area in Campania,maybe around Amalfi or in Salerno somewhere

it seems organized crime in Apulia was older than we thought, at least in Bari, but i don't think there is a continuity with the actual clans

yes, i remember and that's the difference with the 80s, at that time police couldn't prevent the hit like today

Probably no way to tell until somebody that's knows decides to tell
The clans might have stayed intact while their activities might have slowed down enough that nobody paid attention.
Then during different periods of Italy's history,like maybe under Musolini,they just couldn't be as powerful and thought to have been extinct.I think at some point the Camorra was thought to have dsappeared

Probably like in America where in certain cities,their "black hand " activities gave way to Prohibition and then Gambling. Words like Mob and Syndicate replace words like Maifa,Camorra,Black Hand.But in reality although they changed businesses and started working with other ethnicities.,they were still secretly intact families.Probably expose by Appalachia

Its also possible that after that big Trial in Bari that a lot of them came to America by early 1900s,especially to NYS
There were some towns in NYS that were under a heavy Barese/Apulian presence along side of Calabrians
Hard to tell but possibly in NYS the Apulians/Barese might have mixed mainly with the Calabrians in some places or operated side by side

The Mafia in Puglia has had many names and identities, it's called sometimes the chameleon of Italy.

I wonder how the Stidda did flourish in Sicily with the Mafia going at them.
The Stidda groups had to be ruthless

maybe because several of them were ex Cosa Nostra members

Good point.
But so many guys that they organized a brand new organization.

Make me wondering if maybe one day, we will see the birth of a new italian-american organized crime group in the US.
Sure the Cosa Nostra is so well implanted in the US, but so did the sicilian mafia in sicily

Stidda is still a force in the Sicilian provinces of Agrigento and Caltanisetta I believe.

se la possibilita delle morte non esite gratteri non ha una forza sicurezza ma con melloni italia ha il primo leader siccome mussolini che sia alt right sta crescond tutta attaversa l'europa sopratutto siccome Black Lives è simile in nord'america?

gratteri lives with security for since 30 years. melloni alt right grow as a reaction. is it maga that is same in north america?

Most of Stidda is absorbed into Cosa Nostra, in Catania they absorbed whole Stidda clans , made 50 people a day.