Unitary: no local decisions.
Federal: some local decision.
Confederation: a lot of local decisions.
The Answer Is Humans
Hope This Helps!
When caused by humans, acid rain is most commonly a byproduct of intense air pollution. As pollutants are pumped into the atmosphere, the particles rise up to the point where water can condense around them thereby forming water vapor and rain drops; however, those rain drops are closely intertwined with the pollutants thereby giving them an acidic nature.
Answer:
The United Nations (UN) is the largest international organization that works for peace.
