Since a lot of loyalist fled during the Revolutionary war to avoid persecution, their houses were left behind. The left behind houses were often used to shelter the soldiers ad were usually torn up due to the war. Once The revolution ended and America and Britain signed the peace treaty (forgot the actual name) one part of the agreement was for loyalist property to be return. loyalist were angry to come back to their homes and seeing that they had been torn up... thus starting the conflict.
in the antebellum period (after the revolution but before the civil war) there were many reforms and movements. this causing an uprising in conflicts between the north and the south, especially with the idea of the abolition movement in regards to slavery. Later being a leading cause of the civil war.
The angles of impact and the point of convergence can tell us the way the weapon was used to commit the murder. The processes and equipment are through laser and simple trigonometry in order to get to the right angles of the impacts and the area in which the victim was killed.