People were jealous of the highly skilled immigrants arriving from Europe

Yes, people were jealous of the highly skilled immigrants arriving from Europe because they were good at certain things that some people cannot do. It is part of the human nature to be jealous of something that we can't do, that is why people tend to practice their skills on different kind of tasks.

Yes

Explanation:

Most of them were green of anger because of skilled people who were coming from Europe, specially because these new arrivers knew they had to work harder and faster than the local people to win there. The newcomers overcame all the difficultie they hada and the ones they were imposed by local people.