The Louisiana Purchase changed the trajectory of U.S. expansion in the beginning of the 19th century, allowing the size of the country to grow by 530,000,000 acres. And at only a cost to the U.S ...

However, today, the estimated value of the land within the Louisiana Purchase is said to be worth over $1.2 trillion. According to National Geographic, the Louisiana Purchase was one of the ...

Pa., compared President-elect Donald Trump’s call for the U.S. to expand into Greenland to the Louisiana Purchase. That ...