Lincoln declared that the goal of the Civil War was to free enslaved people. preserve the Union. destroy the Confederacy’s economy. destroy the Confederacy’s military.

B. preserve the Union.

Explanation:

Aug 22, 1862: President Lincoln told a New York newspaper that preserving the Union was his main goal of the Civil War — not abolishing slavery. "If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all slaves I would do it," Lincoln said.

the answer is b

Explanation: