This took place a few years after the civil war, mark twain was one of the first to address it. during these years, America's economy did grow at an extraordinary rate, generating unprecedented levels of wealth. Railroads and telephone lines stretched across the country which created new opportunities for entrepreneurs and cheaper goods for consumers.
Television B is correct answer.
Television is a major new media technology that became the most popular by following World War ll.
Hope it helped you.
-Charlie
