Explain judicial review

Judicial review is a kind of court case, in which someone (the “claimant”) challenges the lawfulness of a government decision. If the claimant wins, then the government decision can be declared unlawful, or quashed. That will sometimes mean that the decision has to be made again.

Judicial review is the idea, fundamental to the US system of government, that the actions of the executive and legislative branches of government are subject to review and possible invalidation by the judiciary.

Explanation:

b) the confederacy had to pay all union war expenses.