Which of these countries is expected to see a population decline by 2050?

Which of these countries is expected to see a population decline by 2050?

A China
B United States
C Japan

and the correct answer is: Japan

The UN predicts that, by 2050, the populations of Bosnia and Herzegovina, Bulgaria, Croatia, Hungary, Japan, Latvia, Lithuania, Republic of Moldova, Romania, Serbia, and Ukraine are anticipated to decrease by over 15%. Contributing factors include high levels of emigration, low fertility and birth rates, and aging populations. Additionally, war, disease, and inadequate healthcare may also affect population figures.