The main purpose of the route seen here was to
a) make new roads in a new land.
b) indians relocate to western lands.
c) explore the newly-acquired u. s territory.
d) make routes to newly discovered gold in california.

the answer to your question is a because laws act as guidelines as to what is accepted in society. without it there would be conflicts between social groups and communities. it serves as a norm of conduct for citizens.

mint more silver currency sorry its probably to late.