---
title: "AP US History Key Terms"
description: "1010 AP US History key terms and definitions organized by AP® Course and Exam Description unit."
canonical: "https://fiveable.me/apush/key-terms"
type: "key-terms-hub"
subject: "AP US History"
---

# AP US History Key Terms

## Overview

1010 AP US History key terms and definitions organized by AP® Course and Exam Description unit.

## Units

- [Unit 1: Unit 1 – Interactions North America, 1491–1607](/apush/key-terms/unit/1): 49 terms across 7 topics
- [Unit 2: Unit 2 – Colonial Society, 1607–1754](/apush/key-terms/unit/2): 103 terms across 8 topics
- [Unit 3: Unit 3 – Conflict and American Independence, 1754–1800](/apush/key-terms/unit/3): 144 terms across 13 topics
- [Unit 4: Unit 4 – American Expansion, 1800–1848](/apush/key-terms/unit/4): 139 terms across 14 topics
- [Unit 5: Unit 5 – Civil War and Reconstruction, 1848–1877](/apush/key-terms/unit/5): 83 terms across 12 topics
- [Unit 6: Unit 6 – Industrialization and the Gilded Age, 1865–1898](/apush/key-terms/unit/6): 144 terms across 14 topics
- [Unit 7: Unit 7 – Conflict in the Early 20th Century, 1890–1945](/apush/key-terms/unit/7): 159 terms across 15 topics
- [Unit 8: Unit 8 – The Postwar Period and Cold War, 1945–1980](/apush/key-terms/unit/8): 122 terms across 15 topics
- [Unit 9: Unit 9 – Entering Into the 21st Century, 1980–Present](/apush/key-terms/unit/9): 67 terms across 7 topics

## Related Resources

- [AP US History subject hub](/apush)
- [All AP® key terms](/key-terms)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)