Dysgraphia is a learning disability that affects writing abilities. It can manifest itself as difficulties with spelling, poor handwriting and trouble putting thoughts on paper. Because writing requires a complex set of motor and information processing skills, saying a student has dysgraphia is not sufficient.
Finally, in 476, the Germanic leader Odoacer staged a revolt and deposed the Emperor Romulus Augustulus. From then on, no Roman emperor would ever again rule from a post in Italy, leading many to cite 476 as the year the Western Empire suffered its deathblow.
I saw on wiki that the Pax Romana is considered to have ended in 180 CE. That's a bit odd, IMO, and contrary to what an old history text said. The end of the period of the Good emperors shouldn't be confused with the end of the pax Romana. Ironically, the reign of Commodus, after 180, was far more stable than that of Marcus Aurelius.