They can maintain a government. They get raided by neighboring countries. They have ridiculous resources... Which is why they were constantly colonized. D is my answer.
when two air masses coming together the boundary between the two is called a weather front
Explanation:
The general fertility rate is an age/sex-specific birth rate while the total fertility rate is an age/sex-adjusted birth rate. The TFR is an age-adjusted rate because it is based on the assumption that there are the same number of women in each age group.
