What language is spanish and portuguese based on?

Spanish and Portuguese are both based on the Vulgar Latin spoken in the Iberian Peninsula during the Roman Empire.

Here's a breakdown:

* Latin: The official language of the Roman Empire.

* Vulgar Latin: The everyday language spoken by the common people in the Roman Empire. It differed from Classical Latin (the language of literature and government) and evolved differently in various regions.

* Romance Languages: Languages that evolved from Vulgar Latin after the fall of the Roman Empire. Spanish and Portuguese are two examples.

So, while Spanish and Portuguese share a common ancestor (Vulgar Latin), they developed distinct features over time, resulting in two separate languages.