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Lesson

Western Expansion Geography and History: A Map-Based Inquiry

Guiding question

How has geography influenced economic development, population trends, and historical events in the U.S.?

Grade
6–8
Published
Sep 3, 2025
Historical map of the United States showing state boundaries and geographical features from an earlier era.

Founding Principles

Liberty

Objectives

  • Students will interpret and synthesize information from historical maps.
  • Students will make claims about historical trends based on geographic data.
  • Students will draw conclusions about regional differences and changes over time.
  • Students will answer prompts by creating a claim and line of reasoning supported by evidence.

Materials

Lesson Components

ActivityMajor Railroads as of 1869 Map

A map showing railroads in 1869. This map is used in the lesson Geography and History: A Map-Based Inquiry.

ActivityU.S. Population Over Time Map

Four maps that show how the population of the United States has expanded since 1790.

ActivityTerritory Expansion Map

A map that shows how the territory claimed by the United States has expanded through treaties and purchases since 1775.

ActivityWestern Expansion Map Based Inquiry Middle School Student Response Sheet

Interpret and synthesize information from historical maps.

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Lesson plan

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More Information

Facilitation Notes

  • This is a group station activity. Prior to class, prepare maps and inquiry prompt cards. Ensure each station has the necessary resources. Support for setting up the stations is included in the A Map Based Inquiry Teacher Resource.
  • The Anticipate section of the lesson includes a couple of different ways to build either background knowledge or map analysis skills with students before engaging in the rest of the lesson. Choose one or more activities based on student needs and time available.

Standards