How did warner bros start?

The four Warner Brothers (Harry, Abe, Sam, and Jack) came from a Polish Jewish immigrant family. The eldest brother Harry moved to Baltimore, Maryland, working first in a bicycle shop and then as a shoe salesman. He started a film distribution business in 1903. His brothers soon joined him in the business. In 1918, they founded Warner Bros. Pictures, Inc. Warner Bros. became one of the most successful film studios in Hollywood.