Some parts of Africa to people in the US. They may may have limited resources, food, water, shelter. Suburban people can buy whatever and are comfortable.
Explanation:
external, when he was walking down the road alone, while cars passing by without stopping to ask him if he needed help or anything
I need help with this one too
Well if all you need is a website to go to, then here is a great source.
http://www.aacc.nche.edu/Resources/aaccprograms/diversity/brownvboard/Pages/supremecourt.aspx
Used to separate to independent clauses when second explains illustrates the first