ECON 121

International Trade Theory

Economics · 4 units · Undergraduate upper division (100-199)

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Not open to students with credit for former course 120. Theory of international trade: bases, direction, terms, volume, and gains of trade. Effects of tariffs, quantitative restrictions, and international integration. Effects of free and restricted trade on economic welfare and political stability.

P/NP or letter grading.

When it runs

Winter 2027

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.

Checking the Schedule of Classes…

Requisites

Official UCLA wording
Requisite: course 101. Corequisite: course 121L.

BruinTree reads · Prerequisite

confidence 1.00 · from text

ECON 101

BruinTree reads · Corequisite

confidence 1.00 · from text

ECON 121L

Requires

Everything that has to come before this course, not just the courses named in the requisite above.

ECON 121

ECON 101Microeconomic Theory
- ECON 11Microeconomic Theory
  - ECON 1Principles of Economics
  - MATH 31ADifferential and Integral Calculus1 more beneath
  - MATH 31BIntegration and Infinite Series
ECON 121LInternational Trade Theory Laboratory

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

ECON 121

ECON 121LInternational Trade Theory Laboratory
- ECON 121International Trade Theoryanother path to it

1 course lists this as a requisite. The whole downstream is here — 2 courses over 2 levels. Every course here opens its own tree.