[grotesqueness]

There was no peaceful solution. Peace came only after the whole kingdom was wiped out.

really?


The history of the United Kingdom began in the early eighteenth century with the Treaty of Union and Acts of Union. The core of the United Kingdom as a unified state came into being in 1707 with the political union of the kingdoms of England and Scotland,[1] into a new unitary state called Great Britain.[note 1] Of this new state of Great Britain,

 the historian Simon Schama said:
What began as a hostile merger would end in a full partnership in the most powerful going concern in the world... it was one of the most astonishing transformations in European history.

— Simon Schama, [2]



The Act of Union 1800 added the Kingdom of Ireland to create the United Kingdom of Great Britain and Ireland.



History of the United Kingdom - Wikipedia