The document discusses the growth of supermarket chains in the UK since the 1960s and factors influencing shopping behaviors. It notes that independent shops and cooperatives saw declining market share while supermarkets grew in popularity due to changing lifestyles and infrastructure. Rising incomes, more working women, and increased car and appliance ownership helped drive demand for supermarkets' large selections and convenient locations out of town. The text examines impacts of supermarkets on town centers and rural communities, and asks whether current models can continue sustainably into the future given environmental and social concerns.