how did immigration from Europe Asia and the Caribbean as well as Mexico affect the culture of America

As more immigration happened, more culture existed and changed. Since each country had very different culture, they welcomed the culture in and added more. Then the already current cultures changed seeing some of the other culture to be better.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

all of the