How did the louisiana purchase change the united states?

Well, the purchase eventually doubled the size of the United States, it strengthened the country material wise and strategically as well, provided powerful impetus to western expansion and finally it helped confirm the doctrine of implied powers of the constitution.  

false

explanation:

not always that can be recessionary too

a) "how old man winter was driven back " and "ormuzd and arimanes"

hope it