Sunday · September 27, 2026
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American history, reported as it happened
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1868government

Johnson signs the Wyoming Organic Act as territory takes shape along the rail line

The boundaries drawn this week already look like the Wyoming on today's map.

By 1868, the Union Pacific Railroad was pushing west across a patchwork of jurisdictions that had already changed hands half a dozen times since the Louisiana Purchase. On July 25, President Andrew Johnson signed the Wyoming Organic Act, carving a new territory from pieces of Dakota, Idaho, and Utah territory. Cheyenne became the territorial capital. Wyoming entered the Union in 1890, twenty-two years later, with almost the same borders.

Cheyenne
The American Throughline

Wyoming Territory's 1869 grant of women's suffrage, adopted partly to draw settlers, was one of the earliest in the United States to grant women full voting rights. A repeal attempt later died by a single vote in the legislature after the governor's veto. That 1869 law remains a foundational part of Wyoming's identity and is frequently cited in discussions of the history of women's suffrage in the United States.

Did you know
QHow many different territories claimed pieces of Wyoming before 1868?

At least six. The land moved through Nebraska Territory, Dakota Territory (twice, in 1861 and again in 1864), Idaho Territory, and Utah Territory before Congress finally drew Wyoming's own boundary in 1868. The southwest corner alone passed through Utah and Nebraska Territory before landing in Idaho Territory by 1863. Few American territories were reassembled from so many prior jurisdictions in so short a span.

QHow close did Wyoming's women's suffrage law come to being repealed?

One vote. After the territorial governor vetoed a legislative attempt to repeal the 1869 suffrage law, opponents tried to override his veto and fell exactly one vote short. Had that single vote gone the other way, Wyoming would have lost its claim as the first U.S. jurisdiction to grant women the right to vote.

QWhy did Wyoming's 1872 counties look like tall, narrow rectangles?

The territory's five original counties, Albany, Carbon, Laramie, Sweetwater, and Uinta, were each carved to span roughly one-fifth of Wyoming's width, running north to south in long strips rather than compact blocks. The narrow, elongated shape of each county reflected the territory's overall land division into five roughly equal north-south strips.

More from July 25
1946

A geyser of radioactive water rises 6,000 feet over Bikini Lagoon

Ninety feet down, the Baker device throws a column of sea into the sky and drenches the target fleet in fallout no one had planned for.
1866

Congress creates a new rank so Grant outranks every soldier alive

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18981776 Club
General Nelson Miles opens a new front in the war, three weeks after Santiago fell in Cuba.
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The House passes it 121 to 2, the Senate 30 to 5, an effort to keep Kentucky and Missouri from following the South.
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Read the full July 25 edition →Everything that happened on July 25 →
More from Civil War & Reconstruction
1862

Along a Maryland creek, the single bloodiest day in American history

Lee's invasion stalls near Sharpsburg as Union and Confederate armies trade nearly 23,000 casualties in twelve hours.
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Lincoln warns the South: free the slaves by New Year's or the Union will do it for you

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1868

Logan names May 30 a national day to decorate soldiers' graves; the order goes to every post in the Union

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1862

Seward and Lyons sign a treaty giving both navies the right to search and seize slave ships

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