This literally makes no sense
The sentence is drawing a parallel between the two parties' reasons for going to war. Each of them is associated with a verb: one with "survive," the other with "perish." They are the two antonyms.
Antonyms are words which have opposite meanings. <em>Survive </em>means to contine living, and <em>perish </em>means to stop living.
What Lincoln meant by using this antonym-based parallelism is that the Confederacy fought to end the exisiting nation (meaning, to secede from the North and create a new nation), while the Union fought to keep the nation alive by preventing it from splitting.
In English grammar, a dependent clause<span> is a group of words that has both a </span>subject<span> and a </span>verb<span> but (unlike an </span>independent clause<span>) cannot stand alone as a </span>sentence<span>. Also known as a </span>subordinate clause<span>.</span>
My friend and I went to see Bambi.
I’ve never read the book but if you have this may help. Figurative language and the use of imagery makes the book come alive. It allows the reader to visualize the authors story as if it were a picture or movie. Imagery is using the 5 senses (taste ,touch ,hear ,smell , & sight) to give the audience a vivid picture of the story they are reading.
