Britons is formal usage; Brits is colloquial and sometimes mildly jocular.
Answer
Neither, use British or the respective countries nationality (English, Welsh, Scots....).
I would say one would cause a raised eyebrow (equivalent to another tourist, great) and the second wouldn't win you any points as it can have unfriendly connotations.
Britons is an ancient title for the P-Celtic tribes that inhabited the majority of mainland Island of Britain (modern England Wales and Scotland) before the various Anglo saxon/Viking etc invasions. It does not historically cover all of the UK missing out the Highlands of Scotland (Picts & Gaels) and Northern Ireland (Gaels) and is therefore not the same as British. It also included people who are now settled in Brittany in France following the invasions. I'm not aware of anyone referring to the modern day inhabitants of the UK as Britons.
British is a term which developed from the act of Union and in the following centuries and covers English Welsh Scottish and Northern Irish (at least for the Unionists). It is sometimes shortened to Brits but has a resonance of the Irish especially and Americans wanting rid of the British (Brits out etc). Anyone not using it out of ignorance then is either trying to be insulting or using it tongue in cheek. Given the thick skin and humour it is usually accepted without comment or alternatively will draw a similar response - Yank (especially to annoy them Southern boys) etc. It is of course perfectly OK if the British use it on themselves, self deprecation is a recognised form of humour!
a BRITON was a native of the land of Britain.
The people that live in the United Kingdom are also known commonly as Britons. They are also called Britishers by some people.
there is a British squirrel called the red squirrel, it is native only to Great Britain.
Britain supported Native Americans because the majority of their population supported the British.
The only venomous snake native to the UK is the Adder (Vipera berus).
A native of the UK is officially British. British people are called Britons.
Britain won allies among Native Americans when they supported them. Britain would bring items to trade that the natives wanted for example.
Great Britain
Yes.
Yes but each with different tribes of the Native Americans.
Chimps are not native to Britain but we do have many Chimps in our Wildlife Parks and Zoo's.
the Native Americans helped them