<span>The purpose was to completely reconstruct the union and decide what to do with the problems facing it.
With reconstruction, Lincoln hoped to eliminate the roots that caused conflicts within the country (such as slavery, discrimination, unbalanced economic sector, etc) and transformed it into a more developed one.</span>
Answer:
The reason why the promise of "40 acres and a mule disappointed many newly freed African Americans.
Was because, after the death of former president Abraham Lincoln, President Andrew Johnson mandated to reverse ownership of land from African Americans, and offered only payment for the work of the land.
Explanation:
When former president Abraham Lincoln was alive he made the promise. However when he died and Andrew Johnson replaced him. He just backed it up and blocked African Americans from owning the land. Instead, he offered them payment. Also, most African Americans obtained land through a private transaction. They were disappointed because the government failed its promise.