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7 Lewis and Clark kept detailed journals of the plants and animals
they discovered. They wrote about the Native Americans they met.
Along the way, they sent boxes of seeds, bones, animal skins—and even
a live prairie dog—back to President Jefferson.

8 After Lewis and Clark’s successful two-year expedition, many
explorers, scientists, map makers, and missionaries headed west on the
Oregon Trail. Fur traders, often called mountain men, went west along
the Oregon Trail too. These men trapped beaver and other small
animals. They also traded many goods with Native Americans, such as
rifles and steel knives for more beaver pelts. Mountain men used their
knowledge of the land to guide soldiers and explorers.

knowledge If you have knowledge, you have information or understanding
about something.

Did You Know?

Lewis and Clark’s journey still has an
effect on our lives today. Many of their
routes are used for railways and
highways. Their plant specimens are
studied by scientists. We even use some
of Lewis and Clark’s place names, like
Camp Fortunate in Montana.

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