William Clark and Meriwether Lewis spent three years traveling to the Pacific coast and back. Which of the following was an effect of their trip? A. They were able to provide Jefferson with maps of the territory they had traveled through. B. Americans began to envision a nation that would span the entire continent. C. Jefferson made the Louisiana Purchase as a result of their trip. D. A & B are correct. E. All of the above are correct

William Clark and Meriwether Lewis spent three years traveling to the Pacific coast and back. Which of the following was an effect of their trip? A. They were able to provide Jefferson with maps of the territory they had traveled through. B. Americans began to envision a nation that would span the entire continent. C. Jefferson made the Louisiana Purchase as a result of their trip. D. A & B are correct. E. All of the above are correct