This was the Lewis and Clark Expedition.
The purchase was made in 1803.
In January of 1803, Jefferson requested $2500 from Congress to pay for the costs of the trip.
On January 18, 1803, Thomas Jefferson privately asked Congress to provide funding for a western expedition, which later became famously known as the Lewis and Clark Expedition.
The interest of the expedition was sparked in earlier 1803, but they actually left August 31, 1803.
Congress provided money for a team of explorers to study the new land.
British Expedition to Ceylon happened in 1803.
February 19th 1803, Thomas Jefferson signed an Act of Congress that approved Ohio's boundaries and constitution, but due to an oversight, Congress never passed a resolution formally admitting Ohio as the 17th state in the Union. When this oversight was discovered in 1953 a Bill of Congress was introduced to admit Ohio to the Union retroactive to March 1st 1803. On August 7th 1953 President Eisenhower signed an Act that officially declared March 1st 1803 the date of Ohio's admittance to the Union.
To buy accoutrements for the expedition
1803.
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July 4, 1803
Seaman