Final answer:
The provided historical content recounts the impacts of Abraham Lincoln and other figures of his era on the American public, such as during the Lincoln-Douglas debates and the abolitionist movement. It does not directly answer the question about Ida and Joseph Lincoln, who are not discussed in the context.
Step-by-step explanation:
The impact Ida and Joseph Lincoln had on the American public is not the focus of the historical content provided. However, regarding Abraham Lincoln, it is clear that one significant outcome of the Lincoln-Douglas debates was that it elevated Lincoln's national profile. These debates were pivotal in the history of the United States as they brought to the forefront the contentious issue of slavery and its expansion.
Newspapers across the country published the speeches, and citizens across the North and South followed them with keen interest. These debates also contributed to Lincoln's eventual nomination for the presidency. Additionally, figures such as William Lloyd Garrison and the Grimké sisters played influential roles in dividing and shaping the abolitionist movement.
In summary, figures like Abraham Lincoln, Stephen Douglas, and the Grimké sisters impacted the American public through their respective roles in politics and social movements, leading to long-lasting changes in the nation's political and social landscapes.