Help.
(Don’t reply if you don’t know it you will be reported).

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

c it says nothing about connecting those 2 seas.

answer; /// i believe the correct answer is (oasis)

the right answer is d) a conference committee. it is a temporary panel formed by house and senate members in order to reconcile differences in legislation.