The Romans fought a final war against their Latin neighbors from
340-338 BC. The Romans won a decisive victory and the Latin League was
abolished once and for all.
From 343-341 BC Rome fought a brief war against the Samnites, a
powerful hill tribe who would plague the Romans for the rest of the
century. The Romans won an inconclusive victory, but the war was only
the opening salvo in a long running struggle between the two peoples.
In the decades after the Gauls abandoned Rome to its fate, the Romans
were forced to battle both external threats and internal sedition. The
Plebes, saddled with debt from the reconstruction, forced through
reforms in 367 BC that finally gave them access to the most powerful
office of state: the Consulship.
Soon after the war with Veii, Rome was sacked by invading Gauls. The
event traumatized the Romans and left their city in ruins. It would be
the last time a foreign army breached the walls until the fall of the
empire 850 years later.
Economic necessity forced a final conflict with Veii, Rome's Etruscan
rival to the north. After years of inconclusive fighting, Marcus Furius
Camillus was appointed dictator and lead the Romans to victory.
The years after the creation of the Twelve Tables were hard. Political
discord, grain shortages and famine all conspired to weaken the city,
but the Romans soldiered on in the face of seemingly insurmountable
adversity.
Cincinnatus was famously appointed dictator of Rome in 458 BC and then
resigned soon after, securing his place in history as a paradigm of
republican virtue.
In 451 BC a committee was ordered to compile and then condense Roman
law into a single text called the Twelve Tables of Law. Despite
tyrannical machinations by the committee, the Twelve Tables secured an
objective rule of law for all Roman citizens regardless of wealth or
class.