What definition of realism in theater?

Realismin the theatre was general movement that began in the 19th century and the 1870s. it brough aim of a greater fidelity of real life to texts and performance

Realism in the theatre was a general movement that began in the 19th-century theatre, around the 1870s, and remained present through much of the 20th century. It developed a set of dramatic and theatrical conventions with the aim of bringing a greater fidelity of real life to texts and performances.