Measuring America how the United States was shaped by the greatest land sale in history

Geografie

Geschichte

Frontier and pioneer life > United States

National characteristics, American

Public lands > United States > History

Surveying > United States > History

Surveyors > United States > History

Landesaufnahme

USA

Ohio River Valley > Surveys > History

Ohio River Valley > Geography

United States > Geography

United States > Surveys > History

United States > Territorial expansion