Missouri (United States)
A state in the middle of the United States, home to the Gateway Arch and the Mississippi River.
What is it?
Missouri is a state in the Midwestern United States. Its largest city is St. Louis, where the Gateway Arch is located. The Mississippi River forms its eastern border. Missouri was part of the Louisiana Purchase and played a key role in westward expansion.
Why it matters
Missouri is important because it was a gateway to the American West. The Gateway Arch in St. Louis symbolizes this role. Many pioneers started their journey west from Missouri.
Where you've seen it
This list grows as you capture more exhibits from Missouri.