09.applications intl trade
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Copyright2004 South-Western
99Application:
International Trade
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Copyright 2004 South-Western/Thomson Learning
What determines whether a country imports or
exports a good?
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Who gains and who loses from free trade
among countries?
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What are the arguments that people use to
advocate trade restrictions?
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THE DETERMINANTS OF TRADE
Equilibrium Without Trade
Assume:
A country is isolated from rest of the world and produces
steel.
The market for steel consists of the buyers and sellers in
the country.
No one in the country is allowed to import or export
steel.
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Figure 1The Equilibrium without International Trade
Copyright 2004 South-Western
Consumer
surplus
Producer
surplus
Priceof Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Equilibrium
price
Equilibrium
quantity
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The Equilibrium Without International Trade
Equilibrium Without Trade
Results:
Domestic price adjusts to balance demand and supply.
The sum of consumer and producer surplus measures the
total benefits that buyers and sellers receive.
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The World Price and Comparative Advantage
If the country decides to engage in international
trade, will it be an importer or exporter of steel?
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The World Price and Comparative Advantage
The effects of free trade can be shown by
comparing the domestic price of a good without
trade and the world price of the good. The
world price refers to the price that prevails inthe world market for that good.
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The World Price and Comparative Advantage
If a country has a comparative advantage, then
the domestic price will be below the world
price, and the country will be an exporterof the
good.
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The World Price and Comparative Advantage
If the country does not have a comparative
advantage, then the domestic price will be
higher than the world price, and the country
will be an importerof the good.
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Figure 2 International Trade in an Exporting Country
Copyright 2004 South-Western
Priceof Steel
0Quantity
of Steel
Domestic
supplyPrice
after
trade Worldprice
Domestic
demandExports
Price
before
trade
Domestic
quantity
demanded
Domestic
quantity
supplied
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Figure 3 How Free Trade Affects Welfare in an ExportingCountry
Copyright 2004 South-Western
D
C
B
A
Price
of Steel
0 Quantity
of Steel
Domestic
supplyPrice
after
trade World
price
Domestic
demand
Exports
Price
before
trade
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Figure 3 How Free Trade Affects Welfare in an ExportingCountry
Copyright 2004 South-Western
D
C
B
A
Price
of Steel
0 Quantity
of Steel
Domestic
supplyPrice
after
trade World
price
Domestic
demand
Exports
Price
before
trade
Producer surplus
before trade
Consumer surplus
before trade
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How Free Trade Affects Welfare inan Exporting Country
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THE WINNERS AND LOSERSFROM TRADE
The analysis of an exporting country yields two
conclusions:
Domestic producers of the good are better off, and
domestic consumers of the good are worse off.
Trade raises the economic well-being of the nation
as a whole.
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The Gains and Losses of an ImportingCountry
International Trade in an Importing Country
If the world price of steel is lower than the domestic
price, the country will be an importer of steel when
trade is permitted. Domestic consumers will want to buy steel at the
lower world price.
Domestic producers of steel will have to lower their
output because the domestic price moves to the
world price.
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Figure 4 International Trade in an Importing Country
Copyright 2004 South-Western
Price
of Steel
0 Quantity
Price
aftertrade
World
price
of Steel
Domestic
supply
Domestic
demandImports
Domestic
quantity
supplied
Domestic
quantity
demanded
Pricebefore
trade
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Figure 5 How Free Trade Affects Welfare in an ImportingCountry
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C
B D
A
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
after trade
World
priceImports
Price
before trade
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Figure 5 How Free Trade Affects Welfare in an ImportingCountry
Copyright 2004 South-Western
C
B
A
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
after trade
World
price
Price
before trade
Consumer surplus
before trade
Producer surplus
before trade
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Figure 5 How Free Trade Affects Welfare in an ImportingCountry
Copyright 2004 South-Western
C
B D
A
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
after trade
World
priceImports
Price
before trade
Producer surplus
after trade
Consumer surplus
after trade
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How Free Trade Affects Welfare inan Importing Country
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THE WINNERS AND LOSERSFROM TRADE
How Free Trade Affects Welfare in an
Importing Country
The analysis of an importing country yields two
conclusions: Domestic producers of the good are worse off, and
domestic consumers of the good are better off.
Trade raises the economic well-being of the nation as a
whole because the gains of consumers exceed the lossesof producers.
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THE WINNERS AND LOSERSFROM TRADE
The gains of the winners exceed the losses of
the losers.
The net change in total
surplus is positive.
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The Effects of a Tariff
A tariffis a tax on goods produced abroad and
sold domestically.
Tariffs raise the price of imported goods above
the world price by the amount of the tariff.
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Figure 6 The Effects of a Tariff
Copyright 2004 South-Western
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
with tariff Tariff
Importswithout tariff
Equilibrium
without trade
Price
without tariff
World
priceImports
with tariff
QS
QS
QD
QD
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Figure 6 The Effects of a Tariff
Copyright 2004 South-Western
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Importswithout tariff
Equilibrium
without trade
Price
without tariff
World
price
QS
QD
Producer
surplus
before tariff
Consumer surplus
before tariff
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Figure 6 The Effects of a Tariff
Copyright 2004 South-Western
A
B
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
with tariff Tariff
Importswithout tariff
Equilibrium
without trade
Price
without tariff
World
priceImports
with tariff
QS
QS
QD
QD
Consumer surplus
with tariff
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Figure 6 The Effects of a Tariff
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C
G
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
with tariff Tariff
Importswithout tariff
Equilibrium
without trade
Price
without tariff
World
price
QS
Imports
with tariff
QS
QD
QD
Producer
surplus
after tariff
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Figure 6 The Effects of a Tariff
Copyright 2004 South-Western
E
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
with tariff Tariff
Importswithout tariff
Price
without tariff
World
price
QS
Imports
with tariff
QS
QD
QD
Tariff Revenue
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Figure 6 The Effects of a Tariff
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C
G
A
ED F
B
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
demand
Price
with tariff Tariff
Importswithout tariff
Price
without tariff
World
priceImports
with tariff
QS
QS
QD
QD
Deadweight Loss
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The Effects of a Tariff
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The Effects of a Tariff
A tariff reduces the quantity of imports and
moves the domestic market closer to its
equilibrium without trade.
With a tariff, total surplus in the market
decreases by an amount referred to as a
deadweight loss.
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The Effects of an Import Quota
An import quota is a limit on the quantity of a
good that can be produced abroad and sold
domestically.
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Figure 7 The Effects of an Import Quota
Copyright 2004 South-Western
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
supply
+Import supply
Domestic
demand
Isolandian
price with
quota
Importswithout quota
Equilibrium
with quota
Equilibrium
without tradeQuota
Imports
with quota
QD
World
price
World
price
Price
without
quota=
QS
QD
QS
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The Effects of an Import Quota
Because the quota raises the domestic price
above the world price, domestic buyers of the
good are worse off, and domestic sellers of the
good are better off.
License holders are better off because they
make a profit from buying at the world price
and selling at the higher domestic price.
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Figure 7 The Effects of an Import Quota
Copyright 2004 South-Western
A
E'C
B
G
D E" F
Price
of Steel
0 Quantity
of Steel
Domestic
supply
Domestic
supply
+Import supply
Domestic
demand
Isolandian
price with
quota
Importswithout quota
Equilibrium
with quota
Equilibrium
without tradeQuota
Imports
with quota
QD
World
price
World
price
Price
without
quota=
QS
QD
QS
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The Effects of an Import Quota
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The Effects of an Import Quota
With a quota, total surplus in the market
decreases by an amount referred to as a
deadweight loss.
The quota can potentially cause an even larger
deadweight loss, if a mechanism such as
lobbying is employed to allocate the import
licenses.
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The Lessons for Trade Policy
If government sells import licenses for full
value, revenue equals that of an equivalent
tariff and the results of tariffs and quotas are
identical.
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The Lessons for Trade Policy
Both tariffs and import quotas . . .
raise domestic prices.
reduce the welfare of domestic consumers.
increase the welfare of domestic producers.
cause deadweight losses.
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The Lessons for Trade Policy
Other Benefits of International Trade
Increased variety of goods
Lower costs through economies of scale
Increased competition
Enhanced flow of ideas
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THE ARGUMENTS FORRESTRICTING TRADE
Jobs
National Security
Infant Industry
Unfair Competition
Protection-as-a-Bargaining Chip
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CASE STUDY: Trade Agreements and theWorld Trade Organization
UnilateralUnilateral: when a country removes its trade
restrictions on its own.
MultilateralMultilateral: a country reduces its trade
restrictions while other countries do the same.
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CASE STUDY: Trade Agreements and theWorld Trade Organization
NAFTA
The North American Free Trade Agreement
(NAFTA) is an example of a multilateral trade
agreement. In 1993, NAFTA lowered the trade barriers among
the United States, Mexico, and Canada.
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Summary
The effects of free trade can be determined by
comparing the domestic price without trade to
the world price.
A low domestic price indicates that the country hasa comparative advantage in producing the good and
that the country will become an exporter.
A high domestic price indicates that the rest of the
world has a comparative advantage in producing the
good and that the country will become an importer.
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Summary
When a country allows trade and becomes an
exporter of a good, producers of the good are
better off, and consumers of the good are worse
off.
When a country allows trade and becomes an
importer of a good, consumers of the good are
better off, and producers are worse off.
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Summary
A tariffa tax on importsmoves a market
closer to the equilibrium than would exist
without trade, and therefore reduces the gains
from trade. Import quotas will have effects similar to those
of tariffs.
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Summary
There are various arguments for restricting
trade: protecting jobs, defending national
security, helping infant industries, preventing
unfair competition, and responding to foreigntrade restrictions.
Economists, however, believe that free trade is
usually the better policy.
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