They were elected by each of their colonies.
Answer:
They also engaged in long range trade of almost any other necessities such as salt, potato, stone and luxury items because there was a large need for trade in order to bring such basic goods together.
Maya merchants dealt in two kinds of goods, subsistence items and luxury items.Subsistence items were things used every day such as salt, especially necessary in a hot climate, foodstuffs, clothing and tools.
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"Surrogate wars" also known as "proxy wars" are wars fought in a third country. The US and the Soviet Union were fighting each other in, for example, Afghanistan and Vietnam.
They preferred proxy wars, because they came without civilian victims of own population and without a distraction of the infrastructure of their own countries. In short, the two powers could compete militarily with each other without suffering the worst effects of the wars - this situation allowed them to try to defeat the other one without much risk to their own population.