Black Codes were established in the South immediately after the Civil War in an effort to a. integrate freedmen into American society
b. enforce the Emancipation Proclamation
c. expand educational opportunities
d. limit the rights of newly freed African Americans

Option: d. limit the rights of newly freed African Americans

Explanation:

After the Civil War in America, slaves became free. The new changes were not seen as suitable for the White Southerns because they believed that African Americans were to be controlled and regulated rather than setting them free. The South issued sets of Black Codes called Jim Crow Laws to separate African Americans from the whites. These laws implemented to reduce slaves rights and to force them to work as labour on small wages. Black Codes were a  part of the plan of the Southern white as they were trying to maintain political power and crush the slaves, newly freed slaves.

i think the answer is a and i hope this ; ))

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement