The various wars resulted from a wide variety of factors, including cultural clashes, land disputes, and criminal acts committed by both sides. The European powers and their colonies also enlisted Indian tribes to help them conduct warfare against each other's colonial settlements. hope this helped :)
Trees 3-5 percent causing an increase in temperature and were dying from droughts that happened leaving dehydrated and dead vegetation and so, had no way of food to survive as many say "they did this to themselves" which I slightly agree with but that is some of what the Mayans lacked.
Answer:
Atoms gains other atoms. Atoms lose smaller particles
The south heavily relied on cotton.
Answer is 5 .................................................