What was the name of the organization established to former slaves make the change into a life of freedom?

The Freedman's Bureau.

Explanation:

The Office of Refugees, freedmen and abandoned lands, usually referred to simply as the Office of Freedmen, was an agency of the federal government of the United States that helped freed freedmen (liberated slaves) during the Reconstruction era of the United States

was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south