Birth rate
According to the CIA's "The World Factbook", the country with the highest birth rate is Niger at 6.49 children born per woman and the country with the lowest birth rate is Taiwan, at 1.13 children born per woman.
Nicaragua
Nicaragua has a population growth rate of 1.5% . This is the result of one of the highest birth rates in the Western Hemisphere: 17.7 per 1,000 as of 2017. The death rate was 4.7 per 1,000 during the same period according to the United Nations.