In what year was the Louisiana Purchase completed?

The Louisiana Purchase was completed in 1803, which marked a significant moment in American history. This acquisition involved the purchase of vast territory from France, effectively doubling the size of the United States at that time. The treaty that finalized the purchase was signed on April 30, 1803, and the U.S. Senate ratified it on October 20 of the same year, leading to the formal transfer of land in December. The Louisiana Purchase was pivotal for expansion and exploration, setting the stage for future developments, including the Lewis and Clark Expedition.

The other years mentioned do not correspond with the completion date of the Louisiana Purchase. The year 1776 pertains to the Declaration of Independence, marking the U.S. birth as an independent nation. 1800 is significant for another reason, as it is the year France regained control over the territory before selling it to the U.S. 1812 is notable for the War of 1812, which occurred long after the purchase had been concluded.