The practice by Republicans of reminding voters who caused the civil war was known as waving of the bloody shirt.
It is the political strategy of engaging with voters by reminding the passion and privation of the civil war. It focuses on reconstruction issues facing the country. It is also called the practicing the unpleasant memory from the past.
primary resources are things that come from that person say a autobiography or book secondary sources are things that come from a person that did not experience that even at first hand.