(A) the Pilgrims’ landing
(B) ** the American Revolution
(C) the founding of Jamestown
(D) the outbreak of the Civil War
EXPLANATIONS BELOW
Concept note-1: -The opening sentence of Gettysburg consists of historical events. The address mentions the American Revolution. Gettysburg is a city in Pennsylvania. Known for the Gettysburg National Battlefield, which turned the Civil War, it is now part of the Gettysburg National Military Park.
Concept note-2: -In it, he invoked the principles of human equality contained in the Declaration of Independence and connected the sacrifices of the Civil War with the desire for “a new birth of freedom, ” as well as the all-important preservation of the Union created in 1776 and its ideal of self-government.