Final answer:
Lincoln's Gettysburg Address connects to the Civil Rights movement through its emphasis on completing the unfinished work of creating a nation of freedom and equality, ideals which the Civil Rights movement sought to realize fully.
Step-by-step explanation:
Abraham Lincoln's Gettysburg Address is an iconic speech that laid the philosophical foundation for America's struggle towards equality and its impact reached far beyond the aftermath of the Civil War, echoing into the Civil Rights movement.
In his speech, Lincoln emphasized the sacrifice made by the soldiers during the Civil War and reiterated the need for the nation to complete the 'unfinished work' of ensuring freedom and equality for all, which had cost so many lives.
This spirit of dedication to the ideals of democracy and equality directly connects to the efforts of the Civil Rights movement, which sought to fulfill the promise of 'a new birth of freedom' and 'government of the people, by the people, for the people' by fighting against racial segregation and discrimination to achieve civil and legal equality for African Americans.