Explain why Lincoln's assassination put the future of the nation in question in 1 to 2 sentences.

Lincoln's assassination destabilized the political and social landscape of the United States at a crucial moment in its history, leaving uncertainty about the direction the country would take in terms of reconstruction and reconciliation after the Civil War.

Lincoln's assassination put the future of the nation in question because it led to a period of uncertainty and political upheaval, raising concerns about the stability and direction of the government during the delicate process of post-Civil War reconstruction.