qual e a diferença entre os dois mapas um de 1489 e o outro do mapa mundi atual a) qual a diferença é possível perceber entre os dois mapas?

Here’s the first one let me send the next page of the passage

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

Answer correct get brainliest and 20 points