Answer:
Removal of slavery from the country and defeat of confederate army.
Step-by-step explanation:
The rules and laws of removal of slavery from the country and defeat of confederate army are the reasons that display resentment toward Abraham Lincoln which leads to an assassination attempt. Slavery is a big issue in the United states, the southern states want to maintain slavery whereas the northern states wants to end slavery which leads to civil war. Due to defeat of southern states in the war, the supporter of confederate army attempt assassination on Abraham Lincoln.