How do men build business empires in the US during the period known as The Gilded Age?

During the Gilded Age in the United States (approximately 1870-1900), men built business empires through aggressive industrialization, innovation, and the exploitation of resources. They often utilized new technologies, such as the telegraph and railroads, to enhance efficiency and expand markets. Additionally, practices like monopolization, ruthless competition, and lobbying for favorable legislation enabled them to consolidate power and wealth. This era also saw the rise of influential figures, such as John D. Rockefeller and Andrew Carnegie, who leveraged their entrepreneurial skills to dominate entire industries.