What was the importance of the empires listed above?

There is nothing listed above belove

See what I do there Hahahahah

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:

salmon were fished in puget sound.