Class action: Legal action taken by a number of different persons where the facts and the defendants are similar. Class action lawsuits may occur, for example, after a public transport accident or in the case of a faulty drug, where all the victims sue the same defendant.
Claytons Case
Clayton”s Case: This English case established a presumption that money withdrawn from an account is presumed to be debited against the money first deposited (first in, first out).