Industrial centers is your best answer.
As cities like M & C are in towards the middle of the country, they tend to be the one of the stopping points for travelers going both directions. This can lead too a large increase in population, wares and shipments & goods, as well as money flowing through, which can lead to the expansion of the cities infrastructures & development needed for a city to grow.
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I think it’s A because that’s the one that makes the most sense
<span>A deficiency of niacin, also known as vitamin B3, causes pellagra. B3 deficiency can be caused by a dietary lack of niacin, seen in poor and malnourished farmers in the 1900s, or from poor absorption of niacin, observed with certain diseases or how the food is prepared.</span>
<span>Emperor "Diocletian" realized the Roman Empire was too large for one person to govern, since it was Diocletian who actually split them empire into two halves. </span>
Answer:
First one is 2 bullet point.
Second one is 1 bullet point.