The conquest of interior Sardinia and Corsica was long and bloody, the nuragic people although under-equipped were stubborn guerrilla fighters and incredibly traditionalists.

Carthage tried to subdue them since the 6th century BC, with mixed success.
Their first invasion was beaten down after some initial success and Malchus' expedition was one that earlier achieved great results in Sicily, while their defeat was so unexpected that the general's fate was to be crucifixion.
Knowing this, Malchus on return assaulted Carthage and installed a short-lived dictatorship before being finally exiled.

In the following centuries 3 major campaigns managed to conquest the coastal and plain areas of Sardinia, managing to create an uneasy peace but definitely not a quiet one, proved by the "punic limes" in Sardinia.
Corsican coast was inherited from the Etruscans around 280BC and since then the two islands were ruled pretty much jointly.

During the first punic war romans had moderate success in the coastal areas but their offensives in the interior faced heavy losses, leaving the romans content with keeping the punic navy away from bases closer to Rome.
The truceless war marked the major shift, as the carthaginians mercenaries killed the punic officers and appealed for roman protection.
When Rime refused they were left alone to face a major Nuragic offensive that ousted them and gave the romans the excuse to invade Sardinia since it was now "independent".

Between the two punic wars they faced a similar situation to the Carthaginians, in which the plains were relatively easy to hold but the mountains were not.
After Cannae the most known uprising resulted in two pitched battles between roman and puno-nuragic forces, resulting in roman victory due a failure to properly connect between the allied armies.
Hampsicora's defeat at the battle of Cornus marked the start of a long and bloody guerrilla campaign in the sardinian and corsican mountains, on which many roman generals earned triumphs against the 3 main tribes of the area: Balares, Ilienses and Korsi, living respectively in north-western Sardinia, Central Sardinia and between north-eastern Sardinia and Corsica.

The last major uprising occurred around 178BC, but unrest continued until it was finally put down by Publio Conrnelio Scipio after his Iberian campaign.
Romans despised the nuragic populations, exterminating 80000 out of a population of little over 300000 and writers like Livy, Plutarc and Cicero used expressions like Sardi venales (sardinian cheap slaves because they had a reputation of trying to kill their "owner" at the first chance), latruncoli mastrucati (thieves dressed up in mastruca, a goat/sheep skin dress typical of the nuragic tribes) and a mixed race that took the worst habits of both barbarians and africans.

A distinctive culture with unique monuments (possibly partly related to the balearic tribes), which was a significant player from the bronze age until the 5th century and still important enough to be mentioned sending envoys at Delphi and Alexander the great in the 4th felt as deserving some more representation compared to EB1.
Many historians also consider the loss of Sardinia (which to carthaginians was a core province, home to many colonies) what ignited the revenge feeling that animated Hamilcar Barca to create the iberian domain which would one day serve as base for his young and promising son to deliver the promise he made when he was 9 years old.