Oligopoly is a market structure with a small number of firms, none of which can keep the others from having significant influence. A monopoly is one firm, a duopoly is two firms and an oligopoly is two or more firms.
You should open a joint bank account. Joint allows deposit or withdraw cash from your dual income. Can share with your family members. Income is safe with you having a joint account because you can monitor transaction.
McCulloch v. Maryland represented a power struggle between the State and Federal law. It was a landmark decision by the Supreme Court of the United States. The state of Maryland had attempted to impede operation of a branch of the Second Bank of the United States by imposing a tax on all notes of banks not chartered in Maryland. Though the law, by its language, was generally applicable to all banks not chartered in Maryland, the Second Bank of the United States was the only out-of-state bank then existing in Maryland, and the law was recognized in the court's opinion as having specifically targeted the U.S. Bank.
