Review for test

Today we watched a video on the different stages on demographic transitions. We also had to draw a picture of the graph showing the different increases and decreases from the crude birth and death rates. Fro example at stage two the birth rate was at a high and the death rate was falling rapidly which meant the natural increase rate was at a very rapid increase. This happened because they brought the industrial revolution which caused more jobs and more economy so that people had more money so they could afford kids. Also, as I said before it caused major improvements in manufacturing goods and delivering them to the market. Stage two people didn't have good healthcare so they introduced the medical revolution which caused more people to live to a longer age and the population to go up in stage three. Finally, the video had talked about things that change the population like fertility rate and things like that we already know.