Can someone give me a detailed explanation on how johann christian bach influenced classical music

"Johann Christian Bach was a galant-style German composer of Italian opera during the early Classical period, and the youngest son of famed Baroque composer Johann Sebastian Bach"

"Jan 1, 2019 - In 1772 he was invited to write an opera for the German elector at Mannheim. J.C. Bach's music reflects the pleasant melodiousness of the galant, or Rococo, style. Its Italianate grace influenced composers of the Classical period, particularly Mozart, who learned from and greatly respected Bach. "

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i think this is true

the answer is counterpoint.

counterpoint definition: "the art or technique of playing a melody or melodies in conjunction with another, according to fixed rules."

counterpoint is present in a lot of baroque music- such as bach (notably his wtc prelude and fugues) and scarlatti, but can also be found in music by mozart, beethoven. it can even be found in music as modern as john williams!