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Select the best evidence to support the statement that in the late 1800s, a law made it easier for magazine companies to do business.

At the turn of the twentieth century, short stories were a preferred form of
entertainment in the United States. This was a boom time for magazine publishing,
owing in part to developments in offset printing technology as well as to the Postal
Act of 1879, which had granted magazines discounted mailing rates. Publications
such as Ladies' Home Journal, The Saturday Evening Post, and The Delineator, all of
which published short stories, sold more than a half million copies per issue. The
authors of these stories were well known at the time and often well paid.