6. Control of the Mississippi River
Farmers west of the
Appalachians shipped their
crops on the Mississippi to
New Orleans. From there,
ships carried the produce to
Atlantic ports.
7. Control of the Mississippi River
Spain controlled New Orleans.
Sometimes they threatened to
close the port. In the Pinckney
Treaty of 1795, Spain agreed
to let Americans ship their
goods down the Mississippi to
New Orleans.
8. Control of the Mississippi River
In 1800 Spain gave
Louisiana back to
France. Napoleon wanted
to grow food in
Louisiana.
9. Control of the Mississippi River
Events in Haiti, a French
colony in the Caribbean,
ruined his plans. Enslaved
Africans in Haiti revolted
and declared their
independence.
10. Control of the Mississippi River
To gain control of
Louisiana, Jefferson
decided to buy
Louisiana.
11. The U.S. Buys Louisiana
Jefferson sent Robert
Livingston and James
Monroe to buy New
Orleans and West Florida
from Napoleon.
12. The U.S. Buys Louisiana
Livingston and Monroe met
with the French foreign
minister. After some time,
he asked them if they would
like to buy all of Louisiana.
13. The U.S. Buys Louisiana
Surprised, Livingston at
first offered $4 million.
Eventually, he and
Monroe agreed to $15
million.
14. The U.S. Buys Louisiana
No one was sure the purchase was
constitutional. In the end,
Jefferson decided that he did have
the authority to buy Louisiana.
The Senate approved the treaty,
and the Louisiana Purchase went
into effect.
18. Purposes of the expedition
to map a route across
the Louisiana Purchase
to the Pacific Ocean
19. Purposes of the expedition:
to study the territory’s
geography—land,
climate, plants, and
animals
20. Purposes of the expedition:
to learn about the Indian
nations who lived there
21. The Journey…..
Lewis and Clark left from St.
Louis and crossed the plains
by way of the Missouri River.
Sacagawea, a Shoshone
woman, and her husband
agreed to accompany the party
as translators.
22. The Journey…..
The Shoshones showed
Lewis and Clark the best
route over the Rockies.
Lewis and Clark crossed
the Continental Divide.
25. The Journey…..
The party built canoes and
floated down the
Columbia River to the
Pacific Ocean.
The return trip back to St.
Louis took another year.