I believe 420 SEL hit it on the head. For an economy to develop specialization occurs one saw this as our own US economy evolved from the pioneer days. At first every one would make/grow what ever they needed as best as possible, but eventually we figured out that we were all better at something than others and therefore we specialized and traded goods with each other. A blacksmith, carpenter, farmer, teacher, etc. Leading to lower and lower costs and higher and higher income and more and more free time!

On a global scale the same thing is true therefore one must have seamless transfer of capital and labor between coountires for the world economy as a whole to progress.

But the assumptions here are seamless, ie no protectionism, no tariffs and an open culture. Nationalism, tariffs etc can stem the tide of imported goods therefore providing trade surpluses to one side over the other and this leads to lopsided growth of the trading partners.

England practiced this in their colonial days but eventually the system broke down.

Love the washintgon.edu link thanks mbz380se.

Man this topic is way cool could be a thesis in here very easily

Best of luck on the paper rdc5000

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