Short answers, pulled from the story.
Roman rule over Britain began in 43 AD when Emperor Claudius sent four legions across the Channel and ended in 410 AD with the final Roman withdrawal. The period of Roman administration lasted over three centuries before native kingdoms formed Sub-Roman Britain.
Emperor Claudius ordered the invasion of Britain in 43 AD and sent four legions across the Channel to conquer the island. Julius Caesar had previously attempted invasions in 55 and 54 BC but failed to establish full control.
The Battle of Mons Graupius in 84 AD was a decisive Roman victory where general Gnaeus Julius Agricola defeated the Caledonians led by Calgacus. Over 10,000 Caledonians died in the battle while only 360 Romans fell, marking the high-water mark of Roman territory in Britain.
Boudica led a revolt in 60 AD after Rome seized the entire Iceni tribe's lands and violently punished her and her daughters following the death of her husband Prasutagus. Her forces destroyed Camulodunum, Londinium, and Verulamium, killing between 70,000 and 80,000 people before being defeated at the Battle of Watling Street.
Hadrian's Wall was constructed in 122 AD to define the northern frontier of Roman Britain and control movement against the Picts. The stone wall replaced the earlier Stanegate frontier and served as both a defensive structure and a symbol of imperial power.
Christianity arrived in Britain in the 2nd century with early evidence found in a word square at Mamucium and a statement by Tertullian in 200 AD. The religion became well-established by the 5th century, with the Council of Arles in 314 featuring bishops from Britain and the development of a diocesan system.