1900s: The Model T is introduced by Henry Ford at a time when very few people in America own a car.

Today: There are many makes and models of automobiles available. Almost everyone in America learns to drive.

1900s: The first daily comic strip "Mr. Mutt" (later "Mutt and Jeff" ) appears in the San Francisco Chronicle.

Today: Daily comic strips are a regular feature of many newspapers. They have become an integral part of popular culture, and many have been made into animated series for television.

1900s: The first coast-to-coast crossing of America by car is achieved. It takes sixty-five days.

Today: People can travel across America in a few hours in jet planes.

1900s: The first regular cinema is established in Pittsburgh, Pennsylvania.

Today: Moviegoers can choose from dozens of movies at huge multiplex cinemas. Going to the cinema is now a traditional...