Pareto’s Law, also known as the 80/20 rule, is a principle that states that roughly 80% of effects come from 20% of causes. This concept was first introduced by Italian economist Vilfredo Pareto in the late 19th century, who observed that 80% of the land in Italy was owned by 20% of the population. In modern times, Pareto’s Law is often used to describe the unequal distribution of wealth, where a small percentage of individuals hold the majority of the world’s wealth. However, this principle can also be applied to various other areas, such as business, where 80% of a company’s profits may come from 20% of its customers. Essentially, Pareto’s Law highlights the idea that a small portion of inputs or efforts can lead to a large portion of results, making it a valuable concept in understanding and optimizing efficiency and productivity.