Misc: what did british symphony orchestras do without until 1820?

Questions

His "Slavonic Dances" were originally written for four hands on the piano, but are today better known in their orchestral version. ?

The Rakoczy March is named for the leader of what country'scampaign against Austria ?

Who wrote "Flight of the Bumblebee" ?

In 1829 Mendelssohn conducted "St. Matthew's Passion" in the Berlin opera house. This event marked the revival of what famous composer's neglected works ?

In 1867 Paul Dukas published this piece based on a story by Goethe. ?