I mean most people, including uneducated ones, know the sun rises in the east and sets in the west. So, going north is not that difficult. Your points about illiteracy are true, and there is certainly some outside influence leading the charge...but the point about not being able to read a map is irrelevant. We have 40 million illegals in the country...if reading a map was the problem, surely 20 million of those would’ve ended up in Panama or Brazil?
They have guides who bring them. Kill the guides.
Education is not valued in Latino culture.