Which is one feature of the ocean floor found in the open ocean? trench abyssal plaincontinental slopecontinental shelf

ridge and abysall plain

B.    abyssal plain

Explanation:

I did the test on edgenuity and got it right. Hope this helps!

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.