Exploration of wetlands drainage for farming through maps in the United States during the second half of the 19th century and early 20th century focusing on Florida and the Midwest.
Historically, maps have been used to promote political ideologies. The Dutch mastered the technique during the 16th and 17th centuries, making the Low Countries (present-day Belgium, the Netherlands, and Luxembourg or Benelux Countries and Northern France) appear in the form of a lion, called Leo Belgicus.