Which title is most appropriate for this chart describing the 19th century .

A. The Maturing of the American Economy

B. The Changing Face of immigration

C. The Expansion of imperialism

D. The Closing of the West

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:

b, the anti immigrant fervor