What underlying cause often leads to the segregation of racial groups within a society?

One of the main reasons racial groups often become segregated in society is due to historical inequalities and discrimination. This can lead to a lack of opportunities for certain groups, making it harder for them to access good schools, jobs, and housing. For example, if a particular racial group is denied the chance to buy homes in certain neighborhoods, they may end up living in separate areas from other groups. Over time, these divisions can become stronger, as communities grow apart and develop different resources and cultures. This segregation can create a cycle that is hard to break, as each group's experiences and opportunities continue to differ.