The United States Explores the West
"The United States Explores the West" is a Grade 3 history lesson in Social Studies Alive! California's Communities (Chapter 1: Geography) that covers the Lewis and Clark Expedition. Students learn that after the U.S. became a nation concentrated on the East Coast, President Thomas Jefferson sent Meriwether Lewis and William Clark on a multi-year journey to find a route to the Pacific Ocean. Over more than two years, the expedition mapped the terrain, documented plants and animals, and encountered numerous American Indian nations along the way.
Key Concepts
After the United States became a new country, it was mostly on the east coast of North America. Leaders wanted to learn about the huge, unknown lands to the west.
President Thomas Jefferson sent explorers Meriwether Lewis and William Clark on a long journey. This trip became known as the Lewis and Clark expedition. Their goal was to find a path to the Pacific Ocean.
Common Questions
Who were Lewis and Clark?
Meriwether Lewis and William Clark were explorers chosen by President Thomas Jefferson to lead an expedition across the western United States to find a route to the Pacific Ocean.
Why did President Jefferson send Lewis and Clark west?
After the U.S. purchased the Louisiana Territory, Jefferson wanted to learn about the vast, unknown western lands — finding a path to the Pacific, mapping the terrain, and documenting the plants, animals, and peoples living there.
How long did the Lewis and Clark expedition take?
The Lewis and Clark expedition lasted more than two years, from 1804 to 1806, covering thousands of miles from Missouri to the Pacific Coast and back.
What did Lewis and Clark do during their journey?
They made detailed maps of the land, wrote descriptions of plants and animals they had never seen before, and recorded information about the American Indian nations they met along the way.
How did the Lewis and Clark expedition affect U.S. expansion?
Their maps and reports opened the door for future settlers, traders, and explorers to move west, contributing to the westward expansion of the United States throughout the 19th century.
What grade covers the Lewis and Clark expedition?
This lesson is in Grade 3, Chapter 1: Geography of Social Studies Alive! California's Communities.