Respuesta :
B) save the Union
He wanted to preserve the Union at any/all costs
At the start of the American civil war, the main goal that President Lincoln had was to: save the Union.
What was the Union?
This was the Union of all of the states that made up the United States of America.
The reason why the president wanted to save it with the war was because the South wanted to break the Union.
Read more on the civil war here: https://brainly.com/question/1020924