The Proclamation of 1763 was issued by King George II after Britain's victory over France in the French and Indian War and restricted settlers from settling beyond the Appellation Mountains.
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That person is called an IMMIGRANT
The benefit is that OPEC coordinates petroleum policies of its member countries which stabilizes the oil markets. Stable oil markets benefits the world economy. Drawbacks include limitations in actual power in terms of controling member countries and actual prices.
... the proletarians (workers)
