Under which market structure does the action of one firm have a spillover effect on the decision of another firm

Monopoly

Explanation:

In a monopoly market, factors like government license, ownership of resources, copyright and patent and high starting cost make an entity a single seller of goods. All these factors restrict the entry of other sellers in the market. Monopolies also possess some information that is not known to other sellers.

Cheers.

tell me the question and i will be able to answer : )

answera major piece of legislation affecting the financial industry and containing significant privacy provisions for individuals;