Niger

Niger. It's one of the world's most impoverished nations and quite possibly the most impoverished nation on Earth.

The average life span in the United States and most of the developed world is 75-83 years. It's 63 years old as of 2019 according to the World Health Organization
The adult mortality rate is over 51%.
It has the world's highest fertility rate (7.6 children/woman) which led to the world's highest infant mortality rate and how over 50% of the population is under 15.
Like most of Northern Africa, it's mostly Muslim, with some Christians.

The main reason for the bad state of human development is the fact that, since its independence from France in 1960, Niger has been in one way or another under dictators more worried about their pockets than the country's problems. Consider the fact that the first dictator was in power until 1991, followed by a brief period of freedom of speech, which ended in 1996 with another dictatorship that lasted until 1999. A constitutional crisis followed in 2010 when the incumbent president tried to stay longer than allowed and the military once again took charge (however, this time they were more welcomed since they were deposing the increasingly more dictatorial president Mamadou). A coup d'état occurred in 2023, leading to military control of the country.

Also, serious cases of drought come from time to time, putting the agriculture in grave danger. After all, the country is just desert, with only some oasis separated by many miles. A famine also struck the country in 2010.

Not to be confused with its neighbor Nigeria. As it was colonized by France rather than Britain, Niger is actually pronounced "Nee-Jher", not "Nye-Jer", and Niger's citizens are referred to as Nigeriens, pronounced as "Nee-Jher-Ee-eins".

The Nigerien flag