The World Changes is a 1933 American pre-Code drama film directed by Mervyn LeRoy and starring Paul Muni as an ambitious farm boy who becomes rich, but does not handle success well.

In the Dakota Territory in 1856, pregnant Anna Nordholm and her husband Orin build a cabin for a simple farm life.

Orin Jr. speaks with a gambler in 1877 about money to be made driving steers north from Texas, but his parents disapprove.

He sneaks out of the house in the middle of the night, leaving a letter that he will drive steers and Selma will understand.

Orin Sr. asks why he cannot stay in Orinville, but thinks that what drove him and Anna west is what drives his son to Chicago.

Ginny announces at the party that Orin is retiring and establishing an art gallery, and his company's stock falls.

Philip visits Orin Jr., who tells Richard that he is making a mistake by letting Natalie marry him.

In late October 1929, the stock market crashes and Richard and his son Paul face prison.

Orin Jr. sees Richard's body, flashes back to Ginny, falls down the stairs and dies.