U.S geography

• Top three largest states: Alaska, Texas, California.
• Smallest state: Rhode Island. 
• The neighboring countries of the USA are Canada to the north and Mexico to the south, while the Atlantic Ocean lies to the east and the Pacific Ocean to the west.
• The United States purchased the Louisiana Territory from France in the Louisiana Purchase of 1803.
• The United States purchased Florida from Spain.
• Through treaties with Britain in the 1840s, the United States acquired the Oregon Country.
• The United States acquired several states from Mexico through various means, including the Mexican-American War (1846-1848) and subsequent treaties. Some of the states acquired from Mexico include: California, Nevada, Utah, Arizona, New Mexico 
• The United States purchased Alaska from Russia. 
• The Great Lakes are a group of five interconnected freshwater lakes located in North America, straddling the border between the United States and Canada.
• The Trail of Tears: the route from Georgia to Oklahoma.