"Magna Carta was written by a group of 13th-century barons to protect their rights and property against a tyrannical king. It is concerned with many practical matters and specific grievances relevant to the feudal system under which they lived." An article on Archives.gov mentions
D) Gettysburg. It was the most high casualty rated battle of the war. After that battle, the Confederates lost every battle of the war because they lost an enormous amount of replaceable men in that battle.
