Impararono
Impararono is a verb form in the Italian language. Specifically, it is the third-person plural, past historic (passato remoto) of the verb imparare. The verb imparare translates to "to learn" in English. Therefore, impararono means "they learned."
The past historic tense in Italian is typically used for actions that were completed in the distant
For example, in a sentence like "I bambini impararono a leggere presto," which translates to "The children