Remove grammatical mistakes: Immigration policy is a practical solution adopted by developed countries with aging societies, namely, Singapore, USA and China.
The United States is a country with a population of 300 million people, and the population is growing rapidly.
The United States is a country with a population of 300 million people, and the population is growing rapidly.
The United States is a country with a population of 300 million people, and the population is growing at a rate of 1.5% per year.
The United States is a country with a population of 300 million
The United States and the United Kingdom have a long history of using the term “immigration policy” to describe the policy of the United States to control immigration.
The United States has a long history of immigration policy.
The United States has a long history of immigration policy.
The United States has a long history of immigration policy.
The United States has a long history of immigration policy.
The United States has a long history of immigration policy.
The United States has a long history