Students trace the territorial growth of the United States from 1783 to 1853 using maps and shading, while exploring the role of technology in westward expansion.

- 1783: Shade the area south of the Great Lakes and east of the Mississippi River.
- 1803: Shade the large area that extends from north to south, excluding the small northern notch.
- 1818: Shade the extra little area at the top (the Northwest Territory).
- 1819: Shade Florida.
- 1845: Shade the large area that Texas claimed, which looks like Texas with a chimney.
- 1846: Shade the area in the northwest corner (Oregon Territory).
- 1848: Shade the big area below the Oregon Territory, excluding the small slice on the Mexico border.
- 1853: Shade the small slice on the Mexico border (Gadsden Purchase).

B. Technology, Ho! Match the images:
- Before 1800... flatboat → By the 1850s... steamboat
- Before 1800... person writing by hand → By the 1850s... telegraph operator
- Before 1800... horse-drawn carriage → By the 1850s... railroad train
- Before 1800... manual printing press → By the 1850s... steam-powered printing press