Britannia

is a major landmass divided into various kingdoms and the main setting of most of the events in The Seven Deadly Sins series.

3,000 years ago
Britannnia, along with the rest of the world, was created by Chaos long before the Holy War thousands of years ago along with the five races before it was sealed away by two of it's creations, the Demon King and the Supreme Deity after they created their own separate realms and their own individual races.

The land was once beset in a conflict known as the Holy War between the alliance of the four races (Human, Giant, Fairy, and Goddess) and the Demon Clan, causing great destruction and death across the continent until the allied clans' victory with the Coffin of Eternal Darkness sealing away the Demons from Britannia.

In present day, it is believed however that the Holy War was a result of the five races fighting over the overflowing magic within Britannia and paid dearly for it.

Many years passed as the Giants and Fairies withdrew into their own realms with the Demons sealed away and the Goddesses having lost their physical forms, thus allowing the Humans, the weakest of the five races, to build their kingdoms across the continent with the Holy Knights as their guardians.

Trivia

 * Britannia is the old name for Britain.
 * In the world of The Seven Deadly Sins, the territory shown as Britannia is actually Britain's northern territory, Scotland. Edinburgh is the capital of Scotland.
 * At the time the series seems to be set, Scotland as it is now geographically would not have been considered part of Britannia (which was modern day England and Wales before the Anglo-Saxons invaded) but rather Pictland or Alba (what it is still called in it's indigenous language, Scottish Gaelic).
 * Despite taking place in a Celtic area, little of Celtic culture is shown, the only example being the soundtrack resembling Gaelic folk songs.