From The Telegraph: Hadrian’s wall boosted economy for ancient Britons, archaeologists discover.

Far from being a hated symbol of military occupation, Hadrian’s Wall was the business opportunity of a lifetime for ancient Britons, archaeologists have discovered.

The 73-mile long Roman wall, built in AD 122 to defend the Roman Empire from hostile Celtic tribes, created a thriving economy to serve the occupying army, according to aerial surveys.

Farmers, traders, craftsmen, labourers and prostitutes seized the occasion to make money from the presence of hundreds of Roman troops.

"Some of the local population [continue].