Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
The Samnite land, properly so called, alone remained unaffected by
these innovations, which, beautiful and natural as they may to some
extent have been, powerfully contributed to relax still more the bond
of national unity which even from the first was loose. Through the
influence of Greek habits a deep schism took place in the Samnite
stock.
The civilized "Philhellenes" of Campania were accustomed to
tremble like the Greeks themselves before the ruder tribes of
the mountains, who were continually penetrating into Campania and
disturbing the degenerate earlier settlers. Rome was a compact state,
having the strength of all Latium at its disposal; its subjects might
murmur, but they obeyed.
The Samnite stock was dispersed and divided;
and, while the confederacy in Samnium proper had preserved unimpaired
the manners and valour of their ancestors, they were on that very
account completely at variance with the other Samnite tribes
and towns.