Many people believe the failure of Reconstruction was primarily a failure of leadership; how might of the outcome of Reconstruction been different had Lincoln lived?

300 words answer one of this questiond from the attach document  Include references and citations where necessary 

Please answer one of the following questions:

1. Many people believe the failure of Reconstruction was primarily a failure of leadership; how might of the outcome of Reconstruction been different had Lincoln lived? (Chapter 15)
2. Why did white southerners (and groups like the KKK) use terror as a weapon in their journey to regain political control of the South? (Chapter 15)
3. In 1865 the South began to enact Black Codes targeting freed slaves; how can this action be considered a turning point in Reconstruction? (Chapter 15)