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Western Expansion (1800-1898)

This map is courtesy of www.theodora.com/maps, used with permission.

At the beginning of 1800, the United States was formally comprised of sixteen states: the original thirteen colonies having been recognized as independent by the Treaty of Paris in 1783 and the states of Vermont, Kentucky and Tennessee having been added to the union by 1796. But American trappers and settlers were busily expanding to other areas, and the country was growing rapidly. Americans did not question their right to colonize vast expanses of North America beyond their country's borders. By the mid-1840s, United States expansionism was expressed in terms of "manifest destiny," and by the end of the nineteenth century, the United States had aquired all of its current territory through a series of wars and peaceful acquisitions:

  • In 1803, the United States made the the Lousiana Purchase, aquiring a huge tract of land (530 million acres!) from Napoleon Bonaparte. This land makes up approximately 22 percent of the current United States and contained parts or all of present-day Arkansas, Missouri, Iowa, Minnesota, North Dakota, South Dakota, Nebraska, New Mexico, northern Texas, Oklahoma, Kansas, portions of Montana, Wyoming, and Colorado, portions of southern Manitoba, southern Saskatchewan and southern Alberta, and Louisiana. Not all of this land was kept, later being ceded to Great Britain and Spain in exchange for other territory.
  • West Florida was made a U.S. possession in 1810 by President James Madison.
  • The Red River Basin, part of current-day Minnesota and North Dakota, was acquired in the Anglo-American Convention of 1818, a treaty with Great Britain which resolved boundry issues, set the US/Canadian boundary along the 49th parallel, and allowed for joint control of the Oregon Country.
  • East Florida was acquired in the Adams-Onis Treaty of 1819 with Spain. The treaty that gained East Florida also included Spain's surrender of any claims to the Oregon Country.
  • The Oregon Country was jointly controlled by the U.S. and Great Britain until 1846 when the Oregon Treaty divided that territory also at the 49th parallel. This created the Oregon Territory, which includes present-day Oregon, Washington and Idaho, as well as parts of Montana and Wyoming.
  • The Republic of Texas, which had gained its independence from Mexico in 1836, voted that year to be annexed by the United States. However it was nearly 10 years before the annexation of Texas took place. President John Tyler signed a treaty of annexation with Texas in 1844; congress approved it in 1845 and Texas became the 28th state later that year.
  • Mexican leader Antonio López de Santa Anna warned that the annexation of Texas would be "equivalent to a declaration of war against the Mexican Republic." Mexico had never formally acknowledged Texas independence and considered it a matter of national pride to fight for what it considered a rebel province. Thus started the Mexican-American war. The United States defeated Mexico and in the subsequent Treaty of Guadalupe Hidalgo, Mexico ceded to the United States parts of what are Texas, Colorado, Arizona, New Mexico and Wyoming, and the whole of California, Nevada and Utah. They also recognized the Rio Grande as Texas' Southern border.
  • Less than five years after the Mexican Cession, the United States made the Gadsden Purchase of 1853, aquiring a strip of land along the U.S.-Mexico border, now in New Mexico and Arizona. This territory was later used for the southern transcontinental railroad.
  • In 1867, the United States purchased Alaska from Russia.
  • Hawaii was annexed in 1898 upon the request of a government made up primarily of American and European businessmen who had overthrown the Kingdom of Hawaii.
  • Puerto Rico, Guam, the Philippines, and Cuba were ceded by Spain to the United States after the Spanish-American War in 1898. All four of these areas were under United States Military Government for extended periods. Cuba became an independent nation in 1902. The Philippines became an independent nation in 1946.
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Bad News for Outlaws
by Vaunda Micheaux Nelson
from Carolrhoda Books, Inc.
for 5th-7th grade
in Historical Fiction (Location: FIC-HIF)
$19.99 $10.00 (1 in stock)
Carry On, Mr. Bowditch
by Jean Lee Latham, illustrated by John O'Hara Cosgrave II
from Houghton Mifflin
Biography for 5th-9th grade
1956 Newbery Medal winner
in Vintage Fiction & Literature (Location: VIN-FIC)
$20.00 (1 in stock)
Davy Crockett
by George Edward Stanley
from Sterling Publishing Co.
for 4rd-6th grade
in Biographies (Location: BIO)
$6.00 (1 in stock)
Death Valley Scotty
from Trans-Anglo Press
for Adult
in Vintage History & Biographies (Location: VIN-HIS)
$16.00 (1 in stock)
Early Days of a Cowboy on the Pecos
by James F. Hinkle
from Unknown Publisher
for 7th-12th grade
in Cowboys & Cattlemen (Location: HISA-19CO)
$3.50 (1 in stock)
Explorers, Missionaries, and Trappers
by Kieran Doherty
from Oliver-Nelson Books
for 7th-9th grade
in Western Expansion (1800-1898) (Location: HISA-19WES)
$6.00 (1 in stock)
I am Sacagawea
Ordinary People Change the World
by Brad Meltzer, illustrated by Christopher Eliopoulos
from Dial Books for Young Readers
for 1st-3rd grade
in Biographies (Location: BIO)
$5.00 (1 in stock)
John James Audubon: Painting America's Wildlife
by Janet Stevenson, illustrated by Robert Boehmer
from Encyclopedia Britannica
for 7th-10th grade
in Vintage History & Biographies (Location: VIN-HIS)
$12.00 (1 in stock)
Kit Carson: Folk Hero and Man
by Noel B. Gerson
from Doubleday & Company
for 4th-8th grade
in Vintage History & Biographies (Location: VIN-HIS)
$7.50 (1 in stock)
Laura Ingalls Wilder: Pioneer Girl
by Laura Ingalls Wilder, edited by Pamela Smith Hill
from South Dakota State Historical Society Press
for 7th-Adult
in Little House Materials (Location: LIR-LHM)
$39.99
Laura's Album
by William Anderson
1st edition from HarperCollins
for 4th-6th grade
in Little House Materials (Location: LIR-LHM)
$9.00 (1 in stock)
Life on the Mississippi
Signet Classics
by Mark Twain
from Harper & Brothers
Autobiography for 9th-Adult
in Vintage Fiction & Literature (Location: VIN-FIC)
$9.00 (1 in stock)
Make Way for Sam Houston
by Jean Fritz; illustrated by Elise Primavera
First Edition from G.P. Putnam's Sons
for 3rd-6th grade
in Biographies (Location: BIO)
$4.00 (1 in stock)
Mark Twain and the Queens of the Mississippi
by Cheryl Harness
from Simon and Schuster
Biography for 2nd-5th grade
in Biographies (Location: BIO)
$12.00 (1 in stock)
Peter Cartwright, the Backwoods Preacher
by Peter Cartwright
Undated from Cranston and Curts
for 10th-Adult
in Vintage History & Biographies (Location: VIN-HIS)
$12.00 (1 in stock)
Pioneering on the Plains
Frontiers of America
by Edith McCall, illustrated by Carol Rogers
from Children's Press
for 2nd-5th grade
in Vintage History & Biographies (Location: VIN-HIS)
$12.00 (1 in stock)
Sam Houston
by Noel Gerson
from Doubleday & Company
for 9th-Adult
in Vintage History & Biographies (Location: VIN-HIS)
$4.00 (1 in stock)
Story of Daniel Boone
Signature Books #15
by William O. Steele, illustrated by Warren Baumgartner
from Grosset & Dunlap
Biography for 4th-8th grade
in Grosset & Dunlap Signature Books (Location: VIN-SIG)
$12.00 (1 in stock)
Will's Race for Home
by Jewell Parker Rhodes
from Little, Brown & Company
for 3rd-8th grade
2026 Coretta Scott King Author Award Winner
in Realistic Fiction (Location: FIC-REA)
$17.99
Willa
by Ruth Franchere
from Thomas Y. Crowell & Co.
for 9th-Adult
in Vintage History & Biographies (Location: VIN-HIS)
$7.50 (1 in stock)
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