Complex sentence: The form became popular in the early 20th century, with leading exponents being Max Reinhardt and August Strindberg., first it was adapted to cinema in 1920s, being Kammerspielfilm and was later adapted for cinema by Ingmar Bergman.
Split into simpler sentences: The form became popular in the early 20th century, with leading exponents being Max Reinhardt and August Strindberg. The first cinema adaptation was Kammerspielfilm in the 1920s, and the format was later adapted for cinema by Ingmar Bergman.