list at least three important details about Mexican immigrants’ journey to the united states.(help me answer this, thx)

Mexican immigration occupies a complex position in the U.S. legal system and in U.S. public opinion. Immigration law has swung back and forth throughout the 20th century, at times welcoming Mexican immigrants and at other times slamming the door shut on them. The public reception of this immigrant group has also been unpredictable; Mexican immigrants have been able to make a place for themselves in communities across the United States, but frequently have had to battle hostile elements in those same communities to survive.

Explanation:

it the big letter b heart my answer

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.