Why was ralph ellison considered a prolific author and unique for his time period?

Ralph Ellison, born on March 1, 1914 in Oklahoma City, Oklahoma, studied music before moving to New York City and working as a writer. He published his bestselling, acclaimed first novel Invisible Man in 1952; it would be seen as a seminal work on marginalization from an African-American protagonist's perspective. Ellison's unfinished novel Juneteenth was published posthumously in 1999.

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.

b.provides a written record of the transaction