Helpful, please define “hamon hoam”.
For one thing, each farmer had to be able to identify which animal was valid for bringing as a Korbon and had to be ready to defend the Jewish nation as needed. Recall Moshe’s and Devorah’s criticism of those not willing to fight.
Each farmer needed to know enough about the calendar and the land geography to make it to Jerusalem in time for the Pesach offering.
If he ever sold any grain to those who only understood another language, he had to understand the customer’s language.