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Hans Rosling undertakes quantitative research and uses secondary resources to develop his model. Quantitative research entails collecting data, analyzing and presenting it. It applies, statistical, computational and mathematical tools to drive the results. Also, Rosling gets his data from the secondary resources such as relevant websites that depict countries censors (Hans 2012).

Some factors that may be present in reducing the birth rate of countries include as follows. First, it’s essential to make the family planning services available to people. Use of family planning plays a significant in reducing high birth, especially to the young couples. Additionally, it gives them more time to plan themselves when to have a child. Secondly, the birth rate can be reduced by improving…