The Lex Pompeia de Transpadanis of 89 BC granted the ius Latii to the communities of Transpadania which had sided with Rome during the Social War .
Transpadania is a region north of the Po .
The Lex Pompeia de Transpadanis of 89 BC granted the ius Latii to the communities of Transpadania , a region north of the Po , which had sided with Rome during the Social War .