Indeed it was. The land 'bridge' between Europe and GB disappeared about 10,000 years ago at the end of the last ice age.
The English Channel
A map of Europe when the British Isles were connected to mainland Europe is included in the link below. You can see the outline of both Great Britain and Ireland as they are today as well. The green obviously indicates land while the blue indicates water.
Ireland and Britain are both islands off mainland Europe.
Scotland is at the northern end of the island of Great Britain, which is part of Europe. Great Britain is included within Europe because it sits on the European continental shelf and until the last ice age it was connected to the mainland of Europe by a land bridge.
It is an island off the coast of mainland Europe.
No. It is on the mainland of Europe. Britain is an island off the coast of Europe, consisting of England, Scotland and Wales.
The Isle of Man, Britain and then mainland Europe.
The English Channel
channel
Great Britain is an island off mainland Europe, and North of Africa and Americas.
Well she was smarter
No it is not. Great Britain is an island of the north west coast of mainland Europe. Italy is a Mediterranean country in the south east of Europe.
It enabled Britain to be a staging post onto mainland Europe in the battle of Britain