Fix grammar in this sentence: Aging population is a problem affecting many global countries.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United States is a country that is facing a serious problem.
The United
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United States is a country that is facing a population explosion.
The United