How does the world's population today compare with it's growth 100 years ago. explain why the changes have taken place

The world's population today is much larger than it has been in anytime in the history of the world, and has been continuing to grow ever since the Industrial Revolution, since this raised the living standards and increased in incomes of an enormous number of people, especially in the western world. Advances in medicine have also played a major role. 

Direction givers- such as maps
sailing tools- compass
                           or a star finder.
meterology- help us know the weather- tv