Answer:
The similarity between these two texts is that both highlight the admiration for someone who is already dead. The difference is that "The Gettysburg Address" admires soldiers who died in the war, while "O Captain, My Captain" refers to admiration for the ship's captain, who represents Lincoln.
Explanation:
Both texts present an emotional language, where they admire and emphasize the importance of people who died in favor of a cause.
In "The Gettysburg Address" we can see a prose text, where the dead in the civil war are highlighted as heroes and important in this very inhospitable and dangerous environment. In "The Captain, My Captain" the language is even more emotional and shows the admiration of a captain who died while trying to guide his vessel on a dangerous voyage.
I am pretty sure it is true, but I am not an expert
Everyone didn't want to wake up Mrs. Black and her shrieking. Everytime someone wakes her up she yells and tells everyone to leave since she dislikes the order of the Phoenix members entering into her house but they have to stay there and endure her screaming since it's the safest place to keep hiding Harry from the death eaters and Voldemort.