The answer is the third one
hannibal
British people wanted and made slaves work in their land. The slaves never got paid back. The owners got more money and bought more slaves.
Isn't that horrible, making people work very hard ,but not paying them back?
That joined together to beat the other forces
Since people speicilize in a certain thing it causes isolation since they want to do good at that certain area or thing they are specializing in.