Answer: Formation of former Confederate states. An effort to reconcile the position of African-Americans. Abraham Lincoln's murder.
Step-by-step explanation:
All of these events relate to the era of reconstruction of the united states, which dates from 1863 to 1877. The fight against slavery was one of the elemental goals of the war, so that, through all levels of government, efforts were made to improve the condition of this population. Particularly vocal in these requests were members of the Republican Party in Congress. Abraham Lincoln's assassination also occurred during this period. Because of its importance, this event was on this list.