One big barrier is economic background. Many students from immigrant parents often can’t afford college or have to work instead of going to school. Another difference can be the language barriers given that it’s harder to learn English than it is most languages because it doesn’t stick to grammar rules as much as others do.
The $200,000 in the given example above represents the revenue of the company
The communism because they basically impose for their needs
No, because studies have shown that the earth has a core. How could something be hollow if it has layers inside of it?
hope this helps :)