Historical Background:when the Romans left in AD 410,Britain no longer had a strong army to defend itself. The Germanic Invaders (the Anglo-Saxons): Jutes Angles Saxons at pppst.com ❖ Historical Background: when the Romans left in AD 410, Britain no longer had a strong army to defend itself. ❖ The Germanic Invaders (the Anglo-Saxons): Jutes Angles Saxons