Polity Territory of Jefferson

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Was an organized incorporated territory of the United States.

Establishment

  • October 1859: The Territory of Jefferson was an extralegal and unrecognized United States territory that existed from October 24, 1859.

Chronology

Interactive Chronologies with maps are available in the section Changes Navigation

1. Events

  • February 1861: Indian Land Cessions in the U.S., 1784 to 1894
  • February 1861: The Territory of Jefferson ceased to exist when the Colorado Territory was created on February 28, 1861.

Disestablishment

  • February 1861: Indian Land Cessions in the U.S., 1784 to 1894
  • February 1861: The Territory of Jefferson ceased to exist when the Colorado Territory was created on February 28, 1861.