He ended it after we crush them and then
worked out a peace treaty tecnicly nobdy won
You can check other sources as well
Answer:
The war began when the Confederates bombarded Union soldiers at Fort Sumter, South Carolina on April 12, 1861. The war ended in Spring, 1865. Robert E. Lee surrendered the last major Confederate army to Ulysses S. Grant at Appomattox Courthouse on April 9, 1865.
Explanation: