Income inequality refers to the gap between those who have a lot of money and those who have very little. It is determined by the distribution of income between rich and poor, and typically measures factors such as wages, property, and investments. Income inequality has risen in many countries over the last few decades, with a growing gap between the rich and the poor. As a result, the world is becoming increasingly unequal, as economic gains are concentrated in the hands of only a few. This is a cause for concern, as income inequality can have serious implications for social mobility, poverty, and access to services and resources. Unchecked, income inequality can create an entrenched system of privilege and deprivation, leading to further tensions and instability in society.