Why do think lincoln repeats the words dedicated and nation in his speech?

Lincoln repeats the Words "dedicated" and "nation" in his speech to emphasize the commitment to the principles of equality and freedom that define the United States. By using "dedicated," he highlights the sacrifices made by those who fought for these ideals, while "nation" underscores the collective identity and responsibility of all Americans to uphold and honor these values. This repetition reinforces the importance of unity and purpose in the face of division.