Abuses are often rooted in ethnic problems.
Answer:
they moved westward
Explanation:
they were 'kicked out' from where they were by the colonists.
It helped to provide them with food and was very fertile for farming. It was also very helpful for transportation.
A positive feedback mechanism is the exact opposite of a negative feedback mechanism. ... In a positive feedback system, the output enhances the original stimulus. A good example of a positive feedback system is child birth. During labor, a hormone called oxytocin is released that intensifies and speeds up contractions.
Hope this helps :)