These are trade alliances. When companies between these countries trade they have to worry less about customs and importing and things like that and crossing the border is much easier because the goal is to boost the economy of all signatory parties.<span />
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Melting in the mantle can also occur if there is a sufficient drop in pressure in the system at a given temperature. In order to decrease pressure, mantle rocks must rise to shallower levels, while experiencing a minimal loss of heat to the surroundings.
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TRUSTT MEEE have a good day :)
Answer: treaty’s help unit country so and lands along with trade agreements and allies and alliances even having to country’s have a common enemy to go against
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