West
Wyoming
“Equality State of Parks and Plains”
Wyoming’s history is shaped by Plains and mountain Native nations, trails, cattle, women’s rights, conservation, and energy. Arapaho, Cheyenne, Crow, Shoshone, Lakota, and other peoples lived in and traveled through the region before U.S. expansion. Oregon, Mormon, California, and Pony Express routes crossed Wyoming, making it central to overland migration. In 1869, Wyoming Territory became the first U.S. territory to grant women the right to vote, a landmark in American suffrage history. Yellowstone became the nation’s first national park in 1872, linking Wyoming to conservation and federal land management. The state also saw cattle conflicts, including the Johnson County War, and later developed economies tied to coal, oil, gas, tourism, and federal lands.
Role in the Founding Era
During the founding era, present-day Wyoming was outside the original United States and within Indigenous homelands connected to Plains, mountain, and river systems. U.S. claims came later through the Louisiana Purchase, the Oregon Country, and the Mexican Cession. Wyoming’s later history reflects the expansion of federal authority across trails, treaties, parks, and extractive economies.
Key Historical Themes
Major Events Connected to Wyoming
Louisiana Purchase
President Jefferson completed the Louisiana Purchase, doubling the size of the United States by acquiring 828,000 square miles from France for approximately $15 million.
Civil War Begins — Fort Sumter
Confederate forces fired on Fort Sumter, beginning the Civil War — the bloodiest conflict in American history, fought over slavery and the future of the Union.
13th Amendment — Abolition of Slavery
The 13th Amendment to the Constitution was ratified, formally abolishing slavery throughout the United States — completing what the Emancipation Proclamation had begun.
14th Amendment — Equal Protection and Citizenship
The 14th Amendment granted citizenship to all persons born or naturalized in the United States and established equal protection under the law — overturning Dred Scott and laying the foundation for modern civil rights law.
19th Amendment — Women's Suffrage
The 19th Amendment was ratified, granting women the right to vote — the culmination of a 72-year suffrage movement that began at the Seneca Falls Convention in 1848.
United States Enters World War I
The United States declared war on Germany and entered World War I — marking the nation's emergence as a major world power and shaping the 20th-century international order.
America at 250 — The Semiquincentennial
The United States marks the 250th anniversary of the Declaration of Independence — a moment to reflect on what the nation has achieved, where it has fallen short, and what comes next.
About Wyoming
Wyoming is the least populous U.S. state and one of the largest by land area. It is known for wide plains, mountain ranges, high deserts, ranches, and public lands. Cheyenne is the capital and largest city, while Casper, Laramie, Gillette, and Jackson are also important communities.
The region was home to Indigenous peoples including the Shoshone, Arapaho, Crow, Lakota, Cheyenne, and others. Fur traders, emigrant trails, railroads, ranchers, and miners later transformed the area. Wyoming became a state in 1890.
Wyoming is famous for being the first territory and state to grant women the right to vote, earning it the nickname the Equality State. Its history also includes the Oregon Trail, cattle ranching, coal and mineral development, and the creation of Yellowstone National Park, the world's first national park.
Today, Wyoming's economy includes energy, mining, tourism, agriculture, and outdoor recreation. Yellowstone and Grand Teton National Parks attract visitors from around the world, while coal, oil, gas, and wind remain important. The state continues to balance conservation, tourism, private land, public lands, and resource development.
Presidents with Wyoming Ties
Significant historical connection — not necessarily born here
Ask Dr. Hart about Wyoming
AI Historical Guide · America 250 Atlas
Dr. Abigail Hart can help you explore Wyoming's history, key events, role in the American story, and connections to presidents and national milestones.