It would be using other people’s ideas without giving them credit.
He took a tone that was quite lyrical and expressed the need to end the war.
In his gettysburg address Lincoln started to redefine the Civil War as a struggle for human equality not only to save the Union. He extolled the memory of those who died during the Gettysburg battle.
In his second inauguration adress the defeat of the South was very close and he tried to appease his audience by advocating a fair treatment of the South.
“The Black Cat" is the more complex story of the two. The murder is unpremeditated, whereas in "The Tell-Tale Heart," it is carefully planned. Additionally, the narrator in "The Black Cat" is an alcoholic, committing his acts of violence against both the cat and his wife under the influence of alcohol.