Final answer:
The House Divided Speech and the Emancipation Proclamation both address the issue of slavery but offer different perspectives on its future.
Step-by-step explanation:
The topics of Abraham Lincoln's House Divided Speech and the Emancipation Proclamation are related as both address the issue of slavery, but offer different perspectives on its future. In the House Divided Speech, Lincoln discusses the potential outcome of a divided nation and the future of slavery in the United States. He states that the nation will either become all slave or all free. On the other hand, the Emancipation Proclamation declares the freedom of slaves in Confederate territories, signaling the eventual end of slavery.