What new developments in retail sales occured in the late nineteenth century?

The railroad gave merchants more reliable access to eastern markets and cheaper newsprint expanded advertising, which gave the retailer greater access to his customers. Catchy phrases and bold claims appeared in ads as did illustrations of goods, bold print, and white space to attract the reader's eye. By 1860 advertisers were beginning to publish prices of their products and to advertise clearance sales. About 1880-1910, retailers and manufacturers began to incorporate and to adopt hierarchical and self-perpetuating forms of management, allowing the company to outlive its founders.