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  2. Robert Gray's Columbia River expedition - Wikipedia

    en.wikipedia.org/wiki/Robert_Gray's_Columbia...

    On this day is when Gray officially named the river Columbia and bestowed other landmarks with names: Capt. Grays named this river Columbia’s, and the North entrance Cape Hancock, and the South Point Adams. [18] Then on May 20, Gray and crew took up anchor around 1 pm to sail for the ocean.

  3. Columbia District - Wikipedia

    en.wikipedia.org/wiki/Columbia_District

    Map of the Columbia River and its tributaries showing modern political boundaries. In 1811 David Thompson was the first European to journey the entire length of the Columbia. The Columbia District was a fur-trading district in the Pacific Northwest region of North America, in both the United States and British North America in the 19th

  4. Columbia Rediviva - Wikipedia

    en.wikipedia.org/wiki/Columbia_Rediviva

    Artist sketch of ship on the Columbia River. Early authorities claim the ship was built in 1773 by James Briggs at Hobart's Landing on North River, in Norwell, Massachusetts and named Columbia. [1] Later historians say she was built in Plymouth, Massachusetts in 1787. In 1790 she became the first American ship to circumnavigate the globe.

  5. Territorial evolution of the United States - Wikipedia

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

    A federal district planned to house the federal government by 1800 was formed from land ceded by Maryland and Virginia, [84] [85] consisting of a 100 square mile diamond, with its southern tip at Jones Point, straddling the Potomac River. It did not yet have a formal name, being simply referred to as the federal district; in September 1791, the ...

  6. Exploration of North America - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_North_America

    Universalis Cosmographia, the "Waldseemüller map" dated 1507, depicts the Americas, Africa, Europe, Asia, and the Pacific Ocean separating Asia from the Americas. It was soon understood that Columbus had not reached Asia, but rather found what was to Europeans a New World , which in 1507 was named "America", after Amerigo Vespucci , on the ...

  7. Boundary markers of the original District of Columbia

    en.wikipedia.org/wiki/Boundary_Markers_of_the...

    Map of the boundary stones. The District of Columbia (initially, the Territory of Columbia) was originally specified to be a square 100 square miles (260 km 2) in area, with the axes between the corners of the square running north-south and east-west, The square had its southern corner at the southern tip of Jones Point in Alexandria, Virginia, at the confluence of the Potomac River and ...

  8. Columbia River Estuary - Wikipedia

    en.wikipedia.org/wiki/Columbia_River_Estuary

    The fighting did not cease, and ultimately, the enormous Cascade Mountains were breached, and the water that had accumulated raced to the sea, creating the Columbia River Estuary. Thus the “Great Water” assumed the flow that it follows today, and Speelyei finally killed Wishpoosh out in the open ocean; his body washed up south of the ...

  9. Columbia (supercontinent) - Wikipedia

    en.wikipedia.org/wiki/Columbia_(supercontinent)

    Columbia, also known as Nuna or Hudsonland, is a hypothetical ancient supercontinent. It was first proposed by John J.W. Rogers and M. Santosh in 2002 [ 1 ] and is thought to have existed approximately 2,500 to 1,500 million years ago (Ma), in the Paleoproterozoic era.