Make the sentence grammatical: Unfortunately, lots of these talents are unwilling to return to their motherland because of the much more superior conditions in developed countries, which causes the brain drain problem.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not a country.
The United States is a country that is not