Role and Importance of Data in Public Health. Address the basic concepts, methods, and tools of public health data collection, use, and analysis and why evidence-based approaches are an essential part of public health practice.
Every language in the world-from English to Mandarin-evolved from a prehistoric 'mother tongue' first spoken in Africa tens of thousands of years ago, a new study reveals.
Making the world better, one answer at a time. The first language is a theoretical concept known as Proto-World or Proto-Sapiens. it existed sometime between 200,000 years ago and 50,000 years ago. It has no writing and it is only a theory.