Amazon river, Paranà River, and Orinoco River.
Answer:The Board of supervisors has the executive power (governing the country, creating policies and overseeing departments - the last one is true at least in Los Angeles) but it also has legislative powers and even some judicial powers..
Spending reduction and tax reduction
Answer:
The most important result of this treaty was that Central and South America were divided up between Portugal and Spain. Spain got most of the land, but the line was far enough west to give Brazil to Portugal.