Which reason best explains why certain areas of southwest asia have low population density in a the semi-arid climate makes farming difficult because it produces look very little rainfall b the most moist climate limits the job opportunities because it reduces oil production c the semi climate progress just heavy rainfall that contributes to devastating floods d the moist climate reduces agricultural production by causing what water shortage

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Explanation:

This is info from my study guide.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

they produces sugar..

hope this , question was a little open ended