Collection of facts about the Louisiana Purchase

This post is a collection of facts about the Louisiana Purchase (1803). There are 11 facts listed below. Source: Wikipedia

• United States acquired Louisiana territory from France
• France controlled this territory 1682-1762 and 1800-1803
• Spanish control 1762-1800
• Authorized by Thomas Jefferson
• Land west of the Mississippi River
• Included parts of Louisiana, Arkansas, Missouri, Iowa, Minnesota, Texas, Oklahoma, Kansas, Nebraska, South Dakota, North Dakota, New Mexico, Colorado, Wyoming, Montana, Saskatchewan, Alberta
• 828,000 square miles
• 26% of the contiguous United States
• Exchanged for $15 million
• Western borders settled in the Adams-Onís Treaty (1819) with Spain
• Northern borders settled in the Treaty of 1818 with Britain