Why is it important to know the order of
succession if a president dies in office?

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:

these civilizations were located around fertile rivers, where they could produce an abundance of crops