Big Apple
"The Big Apple" was popularized as a name for New York City by John J. Fitz Gerald in a number of horse-racing articles for the "New York Morning Telegraph" in the 1920s. The earliest of these was a casual reference on 3rd May, 1921:
Big Apple (dance)
The dance that eventually became known as the Big Apple is speculated to have been created in the early 1930s by African-American youth dancing at the Big Apple Club, which was at the former House of Peace Synagogue on Park Street in Columbia, South Carolina. The synagogue was converted into a black juke joint called the "Big Apple Night Club".