According to Lincoln, what was at the heart of his debate with Douglas?

the rights of the states the immorality and expansion of slavery the social and political equality of blacks the need to preserve the Union

According to Lincoln, the need to preserve the Union was at the heart of his debate with Douglas.

According to Lincoln, the central issue at the heart of his debate with Douglas was the immorality and expansion of slavery.

To understand what was at the heart of the debate between Abraham Lincoln and Stephen Douglas, we need to examine their stances during their famous series of debates in 1858.

The primary focus of their debates was on the issue of slavery. Stephen Douglas, the Democratic candidate for the U.S. Senate, believed in the concept of popular sovereignty, which means that the residents of each state or territory should decide whether to allow slavery or not. On the other hand, Abraham Lincoln, the Republican candidate, strongly opposed the expansion of slavery into new territories.

While the rights of the states, the immorality and expansion of slavery, and the need to preserve the Union were indeed significant aspects of the Lincoln-Douglas debates, the central theme that stood out was the social and political equality of blacks. Lincoln argued that slavery was morally wrong and that African Americans should be granted equal rights and opportunities in society. He emphasized the importance of treating all individuals, regardless of their race, with equality and fairness.

So, the social and political equality of blacks was a crucial contention in the Lincoln-Douglas debates and can be considered at the heart of their discussions.