Answer:
'cause they were primitive
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Wants and needs is predominantly caused by brains in order to fulfill what our body considered missing. In order to fulfill this, our brain tend to give signals that make us focus to make that fulfillment before we could move on to others.
Because of this, our perceptions tend to be catered in order to finish this fulfillment. (for example, starving people may create a perception where they see anoher objects as an actual food)
The answer is Presidential Democracy because the president is elected by the popular vote like the president is in the U.S.
Through art, science, mathematics
