Sorry if I'm to late but I thinks it's c. Many couldn't speak English and had no skills. Hope this helps ;)
Is there some kind of passage I have to read to answer this?
The word that you're looking for is loyalists
Relative chronology: locating relative events relative to eachother
Absolute Chronology: Locating specific dates in order
Yes, and then texas won that land im pretty sure, so then they moved mexico down, and not part of america