Original: In the wake of Bradley and Chapman's contributions, the 1920s saw a boom in Austen scholarship; British novelist E. M. Forster primarily illustrated his concept of the "round" character by citing Austen's works.
Simplified: After Bradley and Chapman, Austen scholarship grew very quickly in the 1920s. British writer E. M. Forster pointed out Austen's works for his idea of the "round" character.