Lewis and Clark Expedition
Noun
Meaning
an expedition sent by Thomas Jefferson to explore the northwestern territories of the United States; led by Meriwether Lewis and William Clark; traveled from St. Louis to the mouth of the Columbia River from 1803 to 1806
Source: WordNetExamples
The ultimate camping trip was the Lewis and Clark expedition.
I think the Lewis and Clark Expedition was the greatest undertaking in American History. I think landing a man on the moon pales next to it.
After the United States acquired the Louisiana Purchase in 1803 and conducted the Lewis and Clark Expedition in 1804-1806, more information about the Plains became available and various pioneers entered the areas.
From 1805 to 1807, the Lewis and Clark Expedition entered the Oregon Country along the Clearwater and Snake rivers, and encountered numerous small settlements of natives.
Many of these later explorers were original members of the Lewis and Clark Expedition who had returned to map and explore the area in greater detail.
Online Etymology Dictionary The 1804 journals of the Lewis and Clark Expedition note that in September 1804, they "discovered a Village of an animal the French Call the Prairie Dog". citation Its genus, Cynomys, derives from the Greek for "dog mouse".