Complex sentence: By the late 1920s, Broderick was playing leads and featured roles, most famously in "Fifty Million Frenchmen" and, in the early 1930s, the revues "The Band Wagon" and "As Thousands Cheer".
Split into simpler sentences: By the late 1920s, she was playing leads and featured roles, most notably in "Fifty Million Frenchmen". In the early 1930s, she starred in the revues "The Band Wagon" and "As Thousands Cheer".