<span>Manifest Destiny was a major influence on how the frontier developed. Manifest Destiny is the doctrine that our land was one that was destined to stretch from sea to shining sea. The reason that this was influential in the frontier's development is that when plans were being made, instead of slowly expanding outwards, the country exploded out living a middle frontier that was neither as developed as California or the East. </span>
Marked a break from the Neolithic culture of the Jomon and a shift toward a new culture that was probably influenced by immigrants from China and Korea.