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  Daniel Boone was an American pioneer, explorer, woodsman, and frontiersman.
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  Eli Whitney invented the cotton gin and revelutionized the south of the United states
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  Land deal between United States and France, in which the United States bought what is now know as Louisiana
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  Expedition of americans across the western part of United states.
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  the Oregon Trail was laid down by traders and fur trappers. It could only be traveled by horseback or on foot.
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  A war that lasted 2 and a half years between United States and other countries
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  The Texas Revolution began with the Battle of Gonzales in October 1835 and ended with the Battle of San Jacinto on April 21, 1836;
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  he started a mission to the Cayuse in what is now southeastern Washington state in 1836
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  the Cherokee nation was forced to give up its lands east of the Mississippi River and to migrate to an area in present-day Oklahoma.
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  article on the annexation of Texas published in the July-August 1845 edition of the United States Magazine and Democratic Review, which he edited.
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  was a group of American pioneers led by George Donner and James F. Reed who set out for California in a wagon train.
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  marked the first U.S. armed conflict chiefly fought on foreign soil.
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  was an American military officer, explorer, and politician who became the first candidate of the anti-slavery Republican Party for the office of President of the United States
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  period in American History which began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma,California.
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  The Battle of the Little Bighorn, fought on June 25, 1876, near the Little Bighorn River inMontana Territory, pitted federal troops led by Lieutenant Colonel George Armstrong Custer (1839-76) against a band of Lakota Sioux and Cheyenne warriors.
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  The Wounded Knee Massacre occurred on December 29, 1890, near Wounded Knee Creek on the Lakota Pine Ridge Indian Reservation in the U.S. state of South Dakota.