William Procter and James Gamble founded Procter & Gamble in 1837 in Cincinnati, Ohio as a candle and soap maker. P&G has grown to be a multinational consumer goods company through innovation and international expansion starting in the 1930s. Key milestones included sales hitting $1M in 1859, developing first global brands in the 1980s, and introducing pioneering products like Crest toothpaste and Pampers diapers that connected research and development with marketing. P&G has pursued a consumer-centric approach through brand leveraging, digital and direct marketing, celebrity endorsements, interactive promotions, and studying consumer behavior with new technologies.