Why has Glasgow's economy declined causing the city to lose nearly a third of its population since the S's?

Glasgow's economy has declined due to the collapse of traditional industries, particularly shipbuilding and heavy manufacturing, which were once the backbone of the city's employment. The shift towards a service-oriented economy and the loss of these industrial jobs led to significant unemployment and economic stagnation. Additionally, factors such as deindustrialization, urban decay, and social issues contributed to population decline, as residents sought better opportunities elsewhere. These changes have profoundly affected the city's demographic and economic landscape since the 1970s.