Identify a resource the student can use to learn about a particular topic.
Topic: The Civil War
One comprehensive and reliable resource is Khan Academy's "US history" course which covers a Unit dedicated to the American Civil War. It contains articles and videos that explain the causes, key events and consequences of the war, along with interactive quizzes to help learners assess their understanding. Here is the link to the Civil War unit: https://www.khanacademy.org/humanities/us-history/civil-war-era.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify a resource the student can use to learn about a particular topic.

### Input:
Topic: The Civil War

### Output:
One comprehensive and reliable resource is Khan Academy's "US history" course which covers a Unit dedicated to the American Civil War. It contains articles and videos that explain the causes, key events and consequences of the war, along with interactive quizzes to help learners assess their understanding. Here is the link to the Civil War unit: https://www.khanacademy.org/humanities/us-history/civil-war-era.