'Known as' or 'called'

[Anonymous]

In this sentence,

John Philip Sousa, (who) (many) people consider the (greatest) composer of marches, wrote his music during the era (known as) the Gay 90s.

'known as' shoud be changed 'called', but I think both expressions
can be used in this. Am I wrong?

Always appreciate your help.

 

[Tdol]

'Called as' suggests to me that everyone agress on the term. ;-)

 

[MikeNewYork]

In this sentence,

John Philip Sousa, (who) (many) people consider the (greatest) composer of marches, wrote his music during the era (known as) the Gay 90s.

'known as' shoud be changed 'called', but I think both expressions
can be used in this. Am I wrong?

Always appreciate your help.

I agree that both expressions can be used. As a matter of fact, I prefer "known as" in that sentence. I prefer "known as", when, As TDOL suggested, many to most people already know the term. I prefer "called", if I am introducing a term that the reader may not know.
However, I would not call either one an error.