In this section you will learn that President Jefferson purchased the Louisiana

territory in 1803 and doubled the size of the United States. Jefferson also sent Lewis and Clark to explore the regions

west of the Mississippi.

In 1800, France and Spain were negotiating for ownership of Louisiana territory, a vast

region between the Mississippi River and the Rocky

Mountains.

Emperor Napoleon Bonaparte of France, who had gained control of the Port of New Orleans and the Louisiana territory, and who was

desperate for money, sold the entire Louisiana territory in 1803

to the United States for $15 million- about three cents per acre.

The Louisiana Purchase doubled the size of the United

States.

Artist rendering of Louisiana Purchase in 1804

Jefferson chose Captain Meriwether Lewis to lead an

exploration into the Louisiana territory. Lewis in turn

recruited his friend Lieutenant William Clark to oversee a volunteer force called the

Corps of Discovery.

Meriwether Lewis William Clark

The Corps of Discovery came to be known as the Lewis and

Clark expedition.

FOR UNDERSTANDING

The ______ was a vast region between the Mississippi River

and the Rocky Mountains controlled by France and

Spain.

• 1) Louisiana territory

• 2) Rocky Mountain range

• 3) Gulf of Mexico

• 4) Klondike

Emperor ______ sold the entire Louisiana territory in 1803 to the

United States.

• 1) Louis XVI

• 2) Charlemagne

• 3) Constantine

• 4) Napoleon Bonaparte

The ______ doubled the size of the United States.

• 1) French and Indian War

• 2) Louisiana Purchase

• 3) Lewis and Clark expedition

• 4) Treaty of Paris

Jefferson chose Captain ______ to lead an exploration into the

Louisiana territory.

• 1) Zebulon Pike

• 2) John Paul Jones

• 3) William Clark

• 4) Meriwether Lewis

Meriwether Lewis recruited his friend Lieutenant ______ to

oversee a volunteer force called the Corps of Discovery.

• 1) William Clark

• 2) Zebulon Pike

• 3) James Monroe

• 4) Daniel Boone

The Corps of Discovery came to be known as the ______.

• 1) Marine Corps

• 2) Trail Blazers

• 3) Green Mountain Boys

• 4) Lewis and Clark expedition

The goal of the Lewis and Clark expedition was to

establish good relations with the Native Americans and try to find a northwest passage

across the United States.

In 1805 Lewis and Clark were joined by the 17-year-old

Shoshone wife of a French trapper named Sacajawea who

proved an invaluable ambassador to other Native

American tribes.

Despite many hardships, the Lewis and Clark expedition traversed

the United States from the Missouri River to the Pacific

Ocean and brought back a wealth of scientific and geographic

information. The expedition also revealed that a northwest water

passage did not exist.

The Explorer Zebulon Pike was charged with finding

the sources of the Arkansas and Red Rivers, and brought back valuable descriptions of the Great Plains and the Río

Grande River Valley.

Impact of Western exploration from 1804-1807

• Accurate maps

• Growth of the fur trade

• Mistaken view of the Great Plains

Map of Lewis and Clark's Track, Across the Western Portion of North America, published 1814

FOR UNDERSTANDING

The goal of the Lewis and Clark expedition was to ______ and try to find a northwest passage across the

United States.

• 1) rescue Sacajawea from the French

• 2) find the source of the Arkansas and Red Rivers

• 3) establish good relations with the Native Americans

• 4) spy on the English

In 1805 Lewis and Clark were joined by ______ who proved an invaluable

ambassador to other Native American tribes.

• 1) Sacajawea

• 2) Pontiac

• 3) Zebulon Pike

• 4) a Shoshone chief

Despite many hardships, the Lewis and Clark expedition traversed the

United States from the Missouri River to the ______.

• 1) Gulf of Mexico

• 2) Rocky Mountains

• 3) Pacific Ocean

• 4) Alaskan wilderness

The Lewis and Clark expedition ______.

• 1) failed to reach the Pacific Coast

• 2) was the brainchild of John Adams

• 3) incorrectly identified the Great Plains as deserts

• 4) revealed that a northwest water passage did not exist

The Explorer ______ brought back valuable descriptions of the Great Plains and the Río Grande River

Valley.

• 1) Zebulon Pike

• 2) Meriwether Lewis

• 3) William Clark

• 4) Daniel Boone

Which was not an impact of Western exploration from 1804-

1807

• 1) Accurate maps

• 2) Mistaken view of the Great Plains

• 3) improved relations with the Spanish

• 4) Growth of the fur trade