5. The Louisiana purchase was significant to the United States because expanding the size of the country was very important in 1803, it doubled the union.
6.Sacagawea was important to Louis and Clark because she spoke the native language and her being a woman displayed a peaceful and powerful connection to those they conquered.
7. Zebulon Pike was the Army lieutenant sent by Jefferson to explore with Louis and Clark. He explored the Mississippi River, the Rocky Mountains and South west North America.
