Who was president during the Louisiana Purchase?

The Louisiana Purchase took place in 1803, and at that time, Thomas Jefferson was the President of the United States. Jefferson played a significant role in the acquisition of this vast territory from France, which effectively doubled the size of the nation and opened up opportunities for westward expansion. His vision of an "Empire of Liberty" was partly realized through this purchase, as it provided land for future generations of Americans. Jefferson's strong belief in agrarianism and the importance of land ownership for American citizens aligned well with this significant expansion of territory.