Why the Concorde was only allowed to fly at supersonic speed over oceans and thinly populated areas and not over highly populated industrialised urban areas?

The Concorde was restricted to supersonic flight over oceans and sparsely populated regions primarily due to the noise generated by its sonic booms, which could be disruptive and potentially harmful in densely populated areas. Supersonic flight produces shock waves that can create loud, thunder-like sounds upon reaching the ground, leading to concerns about noise pollution and public discontent. Additionally, safety regulations and environmental considerations played a role in limiting its operations over urban areas, ensuring compliance with aviation standards and minimizing disturbances to residents.