Student or Learner
"The Russell Group is an association of 24 British public research universities. It is headquartered in London and was established in 1994 to represent its members' interests, principally to government and parliament; 19 smaller British research universities formed the 1994 Group in response, which has since dissolved."
I really don't quite understand when exactly did the 1994 group dissolved. Since when? Formed in 1994 and since 1994? I can't really comprehend the meaning of 'which has since...'
Thank you very much if you can help
It was formed in 1994 but has since been dissolved. We don't know when it was dissolved because we are not told in the paragraph.