Answer:
In 1848, the Treaty of Guadalupe Hidalgo was signed after the Mexican-American War, and it drew a demarcation between the United States and Mexico.
Explanation:
In 1803, U.S. representatives in Paris agreed to pay $15 million<span> for about 828,000 square miles of land that stretched from the Mississippi River to the Rocky Mountains and from the Gulf of Mexico to Canada. This deal, known as the Louisiana Purchase, nearly doubled the size of the United States. It's quite amazing if you ask me, that's a lot of money.</span>
