How did the Emancipation Proclamation and the Gettysburg Address redefine the Declaration of Independence?

Gettysburg Address: On November 19, 1863, President Abraham Lincoln delivered remarks, which later became known as the Gettysburg Address, at the official dedication ceremony for the National Cemetery of Gettysburg in Pennsylvania, on the site of one of the bloodiest and most decisive battles of the Civil War. Though he was not the featured orator that day, Lincoln’s brief address would be remembered as one of the most important speeches in American history. 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.

President Abraham Lincoln issued the Emancipation Proclamation on January 1, 1863, as the nation approached its third year of bloody civil war. The proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free."

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.