Final answer:
The industries that developed rapidly during the Second Phase of Industrialization were communication technologies, electric power production, and steel production.
Step-by-step explanation:
The industries that developed rapidly during the Second Phase of Industrialization were communication technologies, electric power production, and steel production.
Communication technologies, such as the telephone, revolutionized communications and led to the development of electrical appliances and home wiring. Electric power production transformed the way businesses and individuals powered their machines and homes. Steel production enabled the efficient and cost-effective production of large steel elements, which greatly influenced industrial growth.