Answer:
At the start of the Civil War, the Union's primary goal was to preserve the Union and restore the authority of the federal government. As the war progressed, however, the Union's goals began to shift. The Emancipation Proclamation of 1863, issued by President Abraham Lincoln, was a major turning point in the war. This document declared that all slaves in the Confederate states were free, and it changed the Union's goals from simply preserving the Union to ending slavery and protecting the rights of African Americans.
Another major event that changed the Union's goals was the passage of the Thirteenth Amendment in 1865. This amendment abolished slavery throughout the United States, and it was a major victory for the Union. This amendment also led to the passage of the Fourteenth and Fifteenth Amendments, which granted African Americans citizenship and the right to vote, respectively. These amendments further solidified the Union's goal of protecting the rights of African Americans.
Ultimately, the Union's goals were accomplished. The Union was preserved and slavery was abolished. The Thirteenth, Fourteenth, and Fifteenth Amendments were passed, granting African Americans the rights and freedoms they deserved. The Union's goals had changed drastically over the course of the Civil War, but in the end, they were achieved.