The first one is the one that English teachers look for. Although a professional research paper is important, it can be accomplished without multiple sources.
Plagiarism is only the case when that one source is the only writing in your paper, or you didn't cite the source.
As for the length, I can make a pretty strong point in one paragraph.
The last one “Carlos es muy triste”
It's a redundant sentence because it does not need to say "over and over" and "and repeated it. Also those two phrases are double negatives. It could also be called a run on sentence.
Answer:
I think America has grown. Yes I think there still are immigrants there. And I think America has grown less of immigrants
Explanation:
