Refine your search

The results of your search are listed below alongside the search terms you entered on the previous page. You can refine your search by amending any of the parameters in the form and resubmitting it.

Select all Deselect all Add selection to lightbox
Large Small
Thumbnails per page
The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the first American expedition to cross what is now the western portion of the United States, departing in May 1804, from near St. Louis making their way westward through the continental divide to the Pacific coast.<br/><br/> The expedition was commissioned by President Thomas Jefferson shortly after the Louisiana Purchase in 1803, consisting of a select group of U.S. Army volunteers under the command of Captain Meriwether Lewis and his close friend, Second Lieutenant William Clark. Their perilous journey lasted from May 1804 to September 1806. The primary objective was to explore and map the newly acquired territory, find a practical route across the Western half of the continent, and establish an American presence in this territory before Britain and other European powers tried to claim it.<br/><br/> The campaign's secondary objectives were scientific and economic: to study the area's plants, animal life, and geography, and establish trade with local Native American tribes. With maps, sketches, and journals in hand, the expedition returned to St. Louis to report their findings to Jefferson.
The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the first American expedition to cross what is now the western portion of the United States, departing in May 1804, from near St. Louis making their way westward through the continental divide to the Pacific coast.<br/><br/> The expedition was commissioned by President Thomas Jefferson shortly after the Louisiana Purchase in 1803, consisting of a select group of U.S. Army volunteers under the command of Captain Meriwether Lewis and his close friend, Second Lieutenant William Clark. Their perilous journey lasted from May 1804 to September 1806. The primary objective was to explore and map the newly acquired territory, find a practical route across the Western half of the continent, and establish an American presence in this territory before Britain and other European powers tried to claim it.<br/><br/> The campaign's secondary objectives were scientific and economic: to study the area's plants, animal life, and geography, and establish trade with local Native American tribes. With maps, sketches, and journals in hand, the expedition returned to St. Louis to report their findings to Jefferson.
The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the first American expedition to cross what is now the western portion of the United States, departing in May 1804, from near St. Louis making their way westward through the continental divide to the Pacific coast.<br/><br/> The expedition was commissioned by President Thomas Jefferson shortly after the Louisiana Purchase in 1803, consisting of a select group of U.S. Army volunteers under the command of Captain Meriwether Lewis and his close friend, Second Lieutenant William Clark. Their perilous journey lasted from May 1804 to September 1806. The primary objective was to explore and map the newly acquired territory, find a practical route across the Western half of the continent, and establish an American presence in this territory before Britain and other European powers tried to claim it.<br/><br/> The campaign's secondary objectives were scientific and economic: to study the area's plants, animal life, and geography, and establish trade with local Native American tribes. With maps, sketches, and journals in hand, the expedition returned to St. Louis to report their findings to Jefferson.
The 'Alaska Purchase' was the United States' acquisition of the Alaska territories from the Russian Empire on March 30, 1867, by a treaty ratified by the United States Senate, and signed by president Andrew Johnson.<br/><br/> Russia decided to sell its Alaska territory, fearing that it might be seized if war broke out with the United Kingdom. Russia's primary activities in the territory had been fur trade and missionary work among the Native Alaskans. The land added 586,412 square miles (1,518,800 sq km) to the territory of the United States.