What is the term for a country or area that becomes economically divided into wealthier and poorer halves?

The term "polarisation" refers to the growing economic divide within a country or area, resulting in distinct wealthier and poorer halves. This concept encapsulates the idea that as certain regions or populations thrive economically, others may fall behind, leading to a sharp contrast in economic status, access to resources, and quality of life.

Polarisation can manifest in various forms, such as spatial disparities where affluent neighborhoods are juxtaposed against impoverished ones or in social terms, where the gap in income and opportunities fosters social tensions and stratification. Recognizing polarisation is crucial for policymakers who aim to address the challenges associated with economic inequality and implement measures to promote equitable growth.

The other terms, while related to economic divides, do not fully capture the essence of the phenomenon described. Disparity and inequality are broader concepts that can refer to differences in any dimension, not just economic. Fragmentation typically refers to divisions within social or political contexts, rather than specifically indicating economic wealth discrepancies.