The Lewis and Clark Expedition

Historical marker location:
2 I-90 Frontage Road, Big Timber, Montana
( Marker can be reached from I-90 Frontage Road near U.S. 191, in the median.)

  A brief timeline of the Lewis and Clark Expedition
  • 1803: President Thomas Jefferson commissions Meriwether Lewis, his personal secretary, to lead an expedition to explore the western territories of the United States and find a practical route to the Pacific Ocean.
  • 1804: Lewis meets up with William Clark, a former army officer and experienced explorer, in Kentucky. They assemble a team of over 30 men and set out on the journey up the Missouri River.
  • 1805: The expedition reaches the Rocky Mountains and crosses the Continental Divide. They build Fort Clatsop on the Pacific coast and spend the winter there, before returning east in the spring of 1806.
  • 1806: Lewis and Clark split up to explore different routes on their way back to St. Louis. They reunite in September and return to civilization, where they are celebrated as national heroes.
  • 1807: The Lewis and Clark Expedition publishes an official account of their journey, called the "History of the Expedition Under the Command of Captains Lewis and Clark," which becomes a bestseller and helps to promote westward expansion.
The Lewis and Clark Expedition was a significant event in the history of the United States, as it helped to expand the country's knowledge of its western territories and paved the way for future settlement and exploration of the region.
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Montana played a significant role in the development of atomic energy during World War II and the Cold War. The Manhattan Project, which developed the first atomic bomb, had several facilities in Montana, including the Anaconda Copper Company, which supplied uranium ore for the project.
Sweet Grass County, Montana has a rich history that dates back many centuries. Native American tribes, including the Crow and Sioux, roamed the area hunting and foraging before the arrival of European settlers. In the early 1800s, fur trappers and explorers, such as members of the Lewis and Clark Expedition, ventured into the region, establishing trade relationships with the tribes.

The first permanent settlers arrived in the mid-1800s, drawn to the area due to its fertile lands and abundant water sources. Gold was discovered in Sweet Grass County in the late 1860s, leading to a rush of miners seeking their fortunes. However, the gold boom was short-lived, and by the late 1870s, ranching became the primary industry in the area.

The town of Big Timber, the county seat of Sweet Grass County, was established in 1880. It quickly grew into a bustling center of commerce and trade, serving as a hub for local farmers and ranchers. The Northern Pacific Railroad arrived in the 1880s, further enhancing the town's importance as a transportation and shipping hub.

In the 20th century, Sweet Grass County continued to be primarily agricultural, with ranching and farming sustaining the local economy. The community also saw the construction of infrastructure, including schools, churches, and businesses, which further solidified the county's role as an essential part of Montana's rural landscape.

Today, Sweet Grass County maintains a strong sense of its western heritage. The area attracts visitors with its stunning natural landscapes, including the Crazy Mountains and Yellowstone National Park. While the county's economy is still rooted in agriculture, the community has also embraced tourism as a way to showcase its history and natural beauty to the wider world.

This timeline provides a condensed summary of the historical journey of Sweet Grass County, Montana.

  • 1864 - Sweet Grass County is established as a county in the Montana Territory.
  • 1886 - The first post office in Sweet Grass County is established in Big Timber.
  • 1898 - The Montana Legislature designates Big Timber as the county seat.
  • 1902 - The first courthouse in Sweet Grass County is built in Big Timber.
  • 1910 - Sweet Grass County experiences a boom in population due to the growing agriculture industry.
  • 1918 - The original courthouse is destroyed by a fire, and a new one is built in its place.
  • 1936 - The Sweet Grass County Museum is established to preserve and showcase the county's history.
  • 1985 - Sweet Grass County celebrates its centennial anniversary.
  • 1998 - The Carnegie Library in Big Timber is added to the National Register of Historic Places.
  • 2000 - The population of Sweet Grass County reaches its peak at over 3,800 residents.