25 points Doing something for the first time and setting a standard for others to follow is setting a (fraction-precedent)

please help me

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.

Why did noli me tangere have such a big impression on the narrator?

Which best describes the impact of the crusades on european exploration?