Where are the groups?
Please re- post with the groups and I'll be more then happy to help you. (:
Answer:
The Louisiana Purchase is imperative to the United States since it helped us grow over the mainland. We purchased this enormous land parcel for $15 million and multiplied the size of the US. We got the opportunity to investigate new land and work towards accomplishing Manifest Destiny, the possibility that the US ought to grow over the mainland.
The answer is A since they did show how mathematics and measurement could be used in scientific investigation