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  2. John Melish - Wikipedia

    en.wikipedia.org/wiki/John_Melish

    1823 Melish map of the United States and portions of Mexico from the Atlantic Ocean to the area west of the Rocky Mountains. John Melish (June 13, 1771 – December 30, 1822) was a Scottish mapmaker who published some of the earliest maps of the United States (US). In 1816, he created the first map of the United States extending to the Pacific ...

  3. Category:1820s in the United States - Wikipedia

    en.wikipedia.org/wiki/Category:1820s_in_the...

    1820s in the United States by state or territory (42 C) 1820s disestablishments in the United States (27 C) 1820s establishments in the United States (44 C, 2 P)

  4. American frontier - Wikipedia

    en.wikipedia.org/wiki/American_frontier

    2 Maps of United States territories. 3 History. ... or a Spanish connection after 1820. ... was given full responsibility for facilitating navigation on the rivers.

  5. Timeline of the American Old West - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_American...

    The United States agrees to buy the colony of La Louisiane from the French Republic for the price of $15 million. Dec 20: The United States officially takes control of Louisiana, an enormous area of imprecise boundaries extending from the Mississippi River west to the Rocky Mountains, more than doubling the land area of the new nation. 1804: May 14

  6. 1820 in the United States - Wikipedia

    en.wikipedia.org/wiki/1820_in_the_United_States

    March 3 & 6 – Slavery in the United States: The Missouri Compromise becomes law. March 15 – Maine is admitted as the 23rd U.S. state ( see History of Maine ). April 24 – The Land Act of 1820 reduces the price of land in the Northwest Territory and Missouri Territory encouraging Americans to settle in the west.

  7. Mason–Dixon line - Wikipedia

    en.wikipedia.org/wiki/Mason–Dixon_line

    In popular usage to people from the United States, the Mason–Dixon line symbolizes a cultural boundary between the North and the South . Originally "Mason and Dixon's Line" simply referred to the border between Pennsylvania (including "the Delaware Counties") and Maryland.

  8. Cartography of the United States - Wikipedia

    en.wikipedia.org/wiki/Cartography_of_the_United...

    The cartography of the United States is the history of surveying and creation of maps of the United States. Maps of the New World had been produced since the 16th century. The history of cartography of the United States begins in the 18th century, after the declared independence of the original Thirteen Colonies on July 4, 1776 , during the ...

  9. Territorial evolution of the United States - Wikipedia

    en.wikipedia.org/wiki/Territorial_evolution_of...

    The United States expropriated from Panama additional areas around the soon-to-be-built Madden Dam and annexed them to the Panama Canal Zone. [367] [375] Caribbean Sea: May 3, 1932 The United States adjusted the border at Punta Paitilla in the Canal Zone, returning a small amount of land to Panama. This was the site for a planned new American ...