Final answer:
Elm Grove was a neighborhood in Tulsa, Oklahoma known as the Greenwood District, also called Black Wall Street, which was a prosperous community destroyed during the Tulsa Race Riot of 1921.
Step-by-step explanation:
Elm Grove was not any of the options listed in the question. It was actually a neighborhood in Tulsa, Oklahoma known as the Greenwood District. This district was a thriving, economically successful community that became known as 'Black Wall Street' due to its prosperity. Unfortunately, it was tragically destroyed during the Tulsa Race Riot of 1921.