Dance music was largely written to be played in a?

P. s its a 9 letter word

Nightclub( Nowadays) or ballrooms( 19th century)

Explanation:

Dance music is music that is primarily made for dancing and this type of music is alive since ancient times. If we are talking about dance music that started in the 19th or 20th century then, that kind of music was written to be played in a ballroom where people were dressed nicely and elegant and they danced, for example, waltz, ballade, barcarolle and more.

If we are talking about modern dance music, that kind of music is written to be played in nightclubs usually.

that would be the steamboat because none of the other things are forms of transportation