The population exploration is one of the key problems of the developing countries. According to the current survey, China and India are two of the most populated countries in the world ("U.S. Census Bureau Current Population", 2018), whereas Macau and Hong Kong, under the Chinese territory are two of the countries with the highest population density (Wee, 2018). Some of the countries can predict the chance population explosion beforehand and try to control it by using the necessary policies. Following is a short discussion on such policies used in China, India, and Kenya.