What are some negative effects of nationalism?

Discrimination is one of the negative effects because there always be people who will act on too much bias.

I’d go with letter d

There is nothing inherently wrong with being gay. speaking generally, opposition to gays are usually judged on people's moral basis whether it be religion, experience or other factors. to conclude, there is no objective answer to this question only subjective ones that rely on people's idea of what is right and wrong.