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 ancient Gallic, and in
fact the modern French, type of character, sprang out of that
settlement, and are in their ultimate origin creations of Gaius
Gracchus. But the Latin nationality not only filled the bounds
of Italy and began to pass beyond them; it came also to acquire
intrinsically a deeper intellectual basis.
We find it in the
course of creating a classical literature, and a higher instruction
of its own; and, though in comparison with the Greek classics
and Greek culture we may feel ourselves tempted to attach little
value to the feeble hothouse products of Italy, yet, so far as its
historical development was primarily concerned, the quality of
the Latin classical literature and the Latin culture was of far
less moment than the fact that they subsisted side by side with
the Greek; and, sunken as were the contemporary Greeks in a
literary point of view, one might well apply in this case also
the saying of the poet, that the living day-labourer is better
than the dead Achilles.