 
<translate> Ahịrịokwu ahụ dị mkpa n'amaokwu ahụ bụ: Na 1873 J.S. Fry & Sons nke England webatara akwa Ista chocolate mbụ na Britain. N'ihi ya, azịza ya bụ 1873. <eng> The relevant sentence in the passage is: In 1873 J.S. Fry & Sons of England introduced the first chocolate Easter egg in Britain.
Therefore, the answer is 1873. 