Were knocker-uppers common in all parts of the world?
Frequently Asked Question about the extinct profession: Knocker-Upper
No, knocker-uppers were not common in all parts of the world. They were mainly found in industrialized cities in Europe and North America during the 19th and early 20th centuries. Other parts of the world may have had different methods of waking people up, such as using roosters or other natural alarms. Today, knocker-uppers are no longer a common practice.