During the Ice Age Britain, Ireland and mainland Europe were connected to each other as highlands above a vast plain. The Rhine and Thames were part of a great river network. The same process is continuing today as part of global warming.

Doggerland was Part of the continental shelf between England, Holland and Norway that was suddenly flooded when vast quantities of fresh water held back by ice was released and formed the North Sea around 8,000 years ago.

It is estimated 100,000 people died in the event, survivors were driven back as waters continued to rise onto higher land. The name Doggerland comes from the Doggerbank a ridge beneath the North Sea.

During the last ice age, lower sea levels exposed a land bridge called Doggerland between Europe and Britain. People could have walked across this land bridge to migrate between the two regions.

Britain has been an island, or group of islands for many centuries. Once joined by land to continental europe, but this was in pre history.

At the end of the last glaciation people could walk from Europe to Britain, but as sea level rose because of the melting ice, the southern North Sea flooded and broke through the narrow piece of land joining Britain to the mainland of Europe near what is now Dover.

The first time Norway is mentioned with a name in historical sources, it was still an undefined area. When the chieftain and explorer Ottar met the king of England in the 9th century, his story of the homeland was written down. He calls it Norðvegr, which is directly translated to "north way", not so far from "Norway". Here, the word has evolved into "Noreg", and I suppose that the Dano-Norwegian "Norge" is the Danish version.

Slight shifts caused frequent ice ages. Polar ice advanced and retreated each time, carving and moulding the land. A pattern of the Ice Ages emerged, but by the last Ice Age, the ice began to melt and the sea levels rose rapidly. Many ice land bridges were formed between continents.

There are not names for the major geologic events, but here are the names of some things created by the Ice Age shifts:

Beringia/Bering Land Bridge (between Asia and North America)

Doggerland (landmass connecting Great Britain to Europe)

Bering Straight Crossing (between Russia and Alaska)