Import Substitution Industrialization (ISI) is a development strategy in which a country raises tariffs and encourages local production to replace imported goods, aiming to reduce foreign dependency and grow domestic industries (AP Comp Gov essential knowledge LEG-3.A.2).
Import Substitution Industrialization (ISI) is exactly what the name says. Instead of importing manufactured goods from richer countries, a government tries to substitute those imports with stuff made at home. To do that, the state raises tariffs (taxes on imports), subsidizes domestic factories, and sometimes runs key industries itself. The whole point is to reduce foreign dependency and build up a national industrial base, which is the framing the CED uses in essential knowledge LEG-3.A.2.
In AP Comp Gov, the classic example is Mexico in the mid-20th century. Mexico used high tariffs and state-owned enterprises (like PEMEX in oil) to grow its own industries rather than rely on goods from the United States. ISI is a form of protectionism, and it leans on the infant industry argument, the idea that young domestic industries need shelter from foreign competition until they can stand on their own. The catch is that protected industries often stay inefficient because they never face real competition, which is part of why many countries (Mexico included) later shifted away from ISI toward free-market reforms.
ISI lives in Unit 5 (Political and Economic Changes and Development), specifically Topic 5.5 on international and supranational organizations, under learning objective 5.5.A. That placement is the real exam insight. ISI isn't just an economics term; it's one side of a sovereignty tug-of-war. The CED pairs it directly with the IMF and World Bank (LEG-3.A.1), whose structural adjustment programs demand the opposite of ISI, meaning lower tariffs, privatization, and fewer subsidies. So when a country adopts ISI, it's asserting economic sovereignty; when it accepts IMF conditions, it's trading some of that sovereignty for financial help. If you can explain that tension, you've got the heart of Topic 5.5.
Keep studying AP Comparative Government Unit 5
Export-Oriented Industrialization (EOI) (Unit 5)
EOI is ISI's mirror image. Instead of walling off the domestic market, a country builds industries designed to sell abroad. Both are development strategies, but ISI looks inward while EOI looks outward, and the AP exam loves asking you to tell them apart.
International Monetary Fund (IMF) (Unit 5)
IMF structural adjustment programs require the exact policies ISI rejects, including reduced tariffs and cut subsidies. When Mexico needed IMF help after its 1980s debt crisis, it had to dismantle much of its ISI system, which is a textbook example of an international organization limiting national sovereignty.
Infant Industry Argument (Unit 5)
This is the logic behind ISI. New domestic industries can't compete with established foreign giants, so the government shields them with tariffs until they grow up. ISI is basically the infant industry argument turned into national policy.
World Trade Organization (WTO) (Unit 5)
The WTO pushes members to lower trade barriers, which puts it in direct tension with ISI's high-tariff approach. Joining the WTO is one more way countries trade ISI-style protectionism for access to global markets.
ISI shows up most often in multiple-choice questions tied to Topic 5.5 and the Mexico case study. Typical stems ask you to identify the primary goal of ISI policies (reducing foreign dependency by promoting domestic production) or to explain why Mexico adopted ISI in the mid-20th century. You should be able to do three things with this term. First, define it using the CED language, raising tariffs and encouraging local production. Second, contrast it with the free-market conditions attached to IMF and World Bank assistance. Third, connect it to a real country, since Mexico is the go-to AP example. No released FRQ has demanded the term verbatim, but ISI works well as evidence in free-response questions about economic liberalization, sovereignty, or how international organizations pressure domestic policymakers.
Both are industrialization strategies, but they point in opposite directions. ISI builds industries to serve the domestic market and uses tariffs to keep foreign goods out. EOI builds industries to sell goods to the rest of the world and usually requires openness to trade. A quick test for an MCQ stem is to ask whether the policy is blocking imports (ISI) or chasing exports (EOI).
ISI is a development strategy that raises tariffs and encourages local production so a country can make goods at home instead of importing them.
The core goal of ISI is reducing foreign dependency while building up domestic industries, per essential knowledge LEG-3.A.2.
Mexico is the AP Comp Gov case study for ISI, using high tariffs and state-owned enterprises like PEMEX during the mid-20th century.
ISI directly conflicts with IMF and World Bank structural adjustment programs, which require lower tariffs, privatization, and reduced subsidies.
ISI is inward-looking protectionism, while Export-Oriented Industrialization (EOI) is the outward-looking opposite strategy.
On the exam, ISI is your evidence for arguments about economic sovereignty versus the influence of international organizations (learning objective 5.5.A).
ISI is a development strategy where a country raises tariffs and promotes local production to replace imported goods, reducing dependence on foreign economies. It appears in Topic 5.5 under essential knowledge LEG-3.A.2, usually with Mexico as the example.
Not exactly, but they're related. Protectionism is the broad category of policies that shield domestic producers from foreign competition, and ISI is a specific development strategy that uses protectionist tools (tariffs, subsidies) with the bigger goal of building a national industrial base.
ISI builds industries to replace imports and serve the home market behind tariff walls, while EOI builds industries to sell goods abroad and depends on open trade. Same goal of industrialization, opposite direction of trade.
Mexico wanted to reduce its economic dependence on imports, especially from the United States, and develop its own manufacturing base. The government used high tariffs and state-owned companies to protect and grow domestic industries during the mid-20th century.
ISI built industries in the short run, but protected companies often stayed inefficient without competition, and debt crises pushed countries like Mexico toward IMF structural adjustment programs that required dismantling ISI. That shift from ISI to liberalization is one of the most testable storylines in Unit 5.
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