One thing that Senator Bright can argue to show that trade can be beneficial if b) because it allows specialization, which increases total output.
Trade is beneficial because it allows people to be able to get goods that would cost them a higher opportunity cost to get. This means that instead of focusing on goods that are costly to make, they can focus on those goods that are easier to make.
This is called specialization and it is a good thing because it can increase total output. This is because focusing on one product means becoming efficient in its production which would lead to more output being produced.
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