Respuesta :
Millions of people were killed despite very little European territory being gained or lost.
Great Britain demanded that Germany respect Belgium's neutrality, but Germany refused was the motivation for the Great Britain for entering World War I.
Why did Britain entered in WW1?
The main reason of the Britain for entering the World War I was to restore the Belgian sovereignty.
It basically wanted to maintain the balance of power in Europe by defending France and chastening Germany.
Britain officially declared war with Germany on 4 August 1914 and entered the war on the side of the Allies.
Learn more about the Britain enter WWI here:-
https://brainly.com/question/852486
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