the tradition of building houses out of mud walls and thatched roofs ended as the people shifted to materials such as cement blocks for houses and zinc roofs. roads for vehicles were built. buildings such as hospitals and schools were erected in many parts of igboland. along with these changes, electricity and running water were installed in the early 20th century. with electricity, new technology such as radios and televisions were adopted, and have become commonplace in most igbo households.