Complex sentence: Her debut novel published in 1911, contemporary in a theme of her perception of "sexual identity and gender roles" of men and women in Russia, was very popular in pre-revolutionary Russia among the middle-class people as it was provocative and polemical.
Split into simpler sentences: Her debut novel was published in 1911 and explored the theme of her perception of "sexual identity and gender roles" of men and women in Russia. It was very popular in pre-revolutionary Russia among the middle-class people as it was provocative and polemical.