How were civil liberties affected during the Civil War?
Civil liberties were curtailed to a great degree during the Civil War. Perhaps the most famous example of this was the fact that President Lincoln suspended the right to habeas corpus during the war. This allowed the government to arrest and hold anyone for as long as they liked without charging them with a crime.
The government also severely limited the freedom of speech. A good example of this was the case of Clement Vallandingham, a political leader in Ohio. He was arrested and eventually thrown out of the US for speaking out against the war and against Lincoln.