Harbour Seals
Yes. They and roe deer are the only two native species.
Badgers are native to the British Isles. If that's not what you were trying to ask, I have no idea what you mean.
There are at least nine languages native to the British Isles, including:EnglishCornish (Kernowek)Welsh (Cymraeg)CumbricScotsScottish Gaelic (Gàidhlig)NornManx (Gaelge)Irish (Gaeilge)Most of these are Celtic, and the Celts brought that from afar. English derives from Saxon with Viking influences. Norn, is from Scandinavia. Nobody knows what native language was spoken in the British Isles pre-CelticThe languages of the British Isles are the various Celtic languages brought by various Celtic migrations, and what is called English which developed from what displaced the Celtic (largely Welsh) spoken in England before the Saxon and Viking invasions of the dark ages. Interestingly, Latin did not persist. So no languages spoken in the British Isles are native. No-one knows what was spoken before the Celtic migrations. Basque?
No, there is no single leader of the British Isles. What is called the British Isles has a number of countries and they each have their own leaders. The British Isles is a geographical reference, not a political one.
British Isles
No. Romania is a long way from the British Isles. It is in easter n Europe and the British Isles are in western Europe.
Ireland is the smallest country in the British Isles
There is around severn main cities in the british isles!
The British Isles often refers to places that are not part of the UK, mainly the Republic of Ireland. So not all of the British Isles are in the UK.
The Celts were the native Gaelic Peoples of the British Isles and included the Irish, Scots, Welsh, and Britions.
The British Isles are all contained within the continent of Europe.