Hadrians Wall England

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Another possible explanation for the wall is the degree of control it would have provided over immigration, smuggling and customs. Limites did not strictly mark the boundaries of the empire: Roman power and influence often extended beyond the walls. People within and beyond the limites travelled through it each day when conducting business, and organised check-points like those offered by Hadrian's Wall provided good opportunities for taxation. With watch towers only a short distance from gateways in the limites, patrolling legionaries could have kept track of entering and exiting natives and Roman citizens alike, charging customs dues and checking for smuggling. [citation needed] Another theory is of a simpler variety—that Hadrian's Wall was partly constructed to reflect the power of Rome and was used as a political point by Hadrian. Once its construction was finished, it is thought to have been covered in plaster and then whitewashed: its shining surface reflected the sunlight and was visible for miles around.