With <span>A. Vietnam, of course.
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International trade enables specialization, which brings increased efficiency and greater competition to spur the market.
This happens because Specialization would make each nation to focus on producing certain type of products in which they would gain a competitive advantage towards other (either because they had the necessary materials sources or labor qualities) and would create better and cheaper product in the market.
They needed to have enough supply for food is what I would say because if you don't eat you will eventually get weak and die.
Hope It Helped :D
B- the americas were more focused on colonization within the Americas than trading
Hey:)
I think the reason would be <span>Declining birthrates.
hope that's helpful</span>
