The Lex Canuleia, enacted in 445 BC, was a significant piece of legislation in ancient Rome that legalized marriage between patricians and plebeians, two distinct social classes. This law was crucial in the ongoing struggle for social equality and political rights within the Roman Republic, as it helped to bridge the gap between the elite and the common people. By allowing intermarriage, the Lex Canuleia facilitated greater social integration and contributed to the gradual erosion of class barriers in Roman society.

The Lex Canuleia of 445 BC advanced social integration between plebeians and patricians, which was reflected in the poetry of the time. Satirical and moral poets like Plautus and Terence addressed themes of class and civic harmony, using humor and critique to explore societal structures.