WILL MARK BRAINLIEST!!!! PLEASE HELP, LIMITED TIME!!

Read the following passage from Lincoln's Gettysburg Address.

Now we are engaged in a great Civil War, testing whether that nation, or any nation so conceived and so dedicated, can long endure.

What does Lincoln point about about the Civil War and its effect on the nation?

A. It happened a long time ago.

B. The United States was originally ruled by Britain.

C. The nation was founded upon very specific ideals.

D. The founding of the nation was marked by great struggle and strife.

THE CORRECT ANSWER WILL BE RATED AND THANKED!!!!!!!!