The document discusses regional economic change in South Wales as old industries like coal, steel, and shipbuilding declined. This caused unemployment and economic hardship. To address this, the government took measures like setting up enterprise zones and attracting new industries with financial incentives. For example, South Wales attracted high-tech companies through policies that provided funds for investment and infrastructure projects to make the region more accessible and business-friendly. As a result, South Wales was able to successfully transition its economy away from sunset industries.