The Pareto principle, also known as the 80-20 rule states that for many events, roughly 80% of the effects come from 20% of the causes. For example in a business setting, it is suggested that 80% of a company's sales will likely come from 20% of their client base. This phenomenon was first identified when it was found that 80% of Italy's land was owned by 20% of the population. Similar results have been found in the USA, France and the UK. The theory was further supported by its founder when he discovered that 20% of the peapods in his garden contained 80% of the peas.