Roman Britain ( or, later, "", "the Britains") was the area of the island of Great Britain that was governed by the Roman Empire, from 43 to 410AD.

Julius Caesar invaded Britain in 55 and 54BC as part of his Gallic Wars. The Britons had been overrun or culturally assimilated by other Celtic tribes during the British Iron Age and had been aiding Caesar's enemies. He received tribute, installed a friendly king over the Trinovantes, and returned to Gaul. Planned invasions under Augustus were called off in 34, 27, and 25BC. In 40AD, Caligula assembled 200,000 men at the Channel, only to have them gather seashells. Three years later, Claudius directed four legions to invade Britain and restore an exiled king over the Atrebates. The Romans defeated the Catuvellauni, and then organized their conquests as the Province of Britain (). By the year 47, the Romans held the lands southeast of the Fosse Way. Control over Wales was delayed by reverses and the effects of Boudica's uprising, but the Romans expanded steadily northward.

Under the 2nd century emperors Hadrian and Antoninus Pius, two walls were built to defend the Roman province from the Caledonians, whose realms in the Scottish Highlands were never directly controlled. Around 197, the Severan Reforms divided Britain into two provinces: Britannia Superior and Britannia Inferior. During the Diocletian Reforms, at the end of the 3rd century, Britannia was divided into four provinces under the direction of a vicarius, who administered the . A fifth province, Valentia, is attested in the later 4th century. For much of the later period of the Roman occupation, Britannia was subject to barbarian invasions and often came under the control of imperial usurpers and imperial pretenders. The final Roman withdrawal from Britain occurred around 410; the native kingdoms are considered to have formed Sub-Roman Britain after that.

What are the answers to this following set of questions:

1. What did Caesar invade?
2. when?
3. In what war?
4. Did he receive tribute?
5. Who else planned invasions?
6. Anyone else?
7. When did Augustus plan to invade?
8. What were the people there called?
9. When did Caligula try to invade?
10. Cladius?
11. Did the Romans defeat the Catuvellauni?
12. What did they do next?
13. How many walls were built?
14. Under who?
15. When?
16. To keep who out?
17. When was the Severan Reforms?
18. When were the Diocletian Reforms?
19. How many provinces did it make?
20. When did the Roman force withdraw?

Numbered answers:
1. Britain
2. 55 and 54 BV
3. Gallic Wars
4. yes
5. ICaligula
6. Claudius
7. 34,27 and 25 BC
8. Catuvellauni
9. .40 AD
10. 37 AD
11. yes
12. organized the conquests as Province of Britain
13. Two
14. Hadrian and Antoninus Pius
15. 2nd century
16. the Caledonians
17. 197
18. third century
19. two
20. 410