The cause of European countries having population decline can be attributed to LOW BIRTH RATES. This is evident in the fact that the recent statistical survey has shown that the total fertility rates in the majority of European countries are 1.55 per woman.
However, the ideal birth rate according to the United Nations Population Division for an optimum population should be at least 2.1 per woman.
Hence, in this case, the correct answer is "LOW BIRTH RATES."
Can you actually put the "descriptions" in your question next time best one i can give you is the north was <span>industrial, urban, and anti-slavery</span>
