Where musicals invented?

Musicals originated in Europe, with their roots in the vaudeville and music hall traditions of the 19th century. Early musicals were often light-hearted comedies or farces that incorporated music and dance, and they were popular in both Europe and the United States. In the early 20th century, musicals began to take on more serious themes, and they became a major form of theatrical expression. Some of the most famous musicals of all time include "Oklahoma!" (1943), "West Side Story" (1957), and "The Sound of Music" (1965).