<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>
Tried to force people to improve their morals.
Answer:
Under black codes, many states required blacks to sign yearly labor contracts; if they refused, they risked being arrested, fined and forced into unpaid labor. Outrage over black codes helped undermine support for President Andrew Johnson and the Republican Party.
Explanation:
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