Who are the big four and what countries do they represent?

The Big Four refers to the largest accounting firms in the world: Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG. These firms are multinational and provide audit, assurance, tax, consulting, and advisory services globally. They represent countries from around the world, including the United States, United Kingdom, Netherlands, and others.