The american explorer henry morton stanley staked claims along the congo river in africa on behalf of charles darwin

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:

answer; i believe the two groups were irish immigrants and chinese immigrants;