The government was connected because you were not allowed to assemble back in that time, so the government could storm in any time they deemed suitable to them if they had proper suspicion.
Answer: The wall was the northernmost point of the Roman empire for 20 years between the 140s and 160s AD before its forces were withdrawn from Scotland by the mid 160s. Hadrian's Wall became once again the frontier of the province until the final withdrawal of the legions from Britannia in the early 5th century AD.
Explanation: