Most major cities there are on or near a coast, meaning the most people live along each coast.
Answer:
The correct answer is <u><em>D</em></u>. Birthrates drop, and may even drop low enough to reverse population growth.
Since break of bulk is where cargo ships unload, local areas that have ports would have resources shipped in. the economic advantages to local populations is that they have demand from other areas wanting those resources so the port cities get money for giving their resources to non-port cities.