Which essential urban need was met by structure made possible by roman engineering

I believe the answer is: the arc building was for clean water

Through this building, people in roman empire able to obtain water from the resources that located outside of their empire and provide necessary nutrients for their crop to grow. The clean water was also used to support various other Roman economic sector, such as gardens, mining, blacksmith, animal husbandry, etc.

in february 1787, congress decided that a convention should be convened to revise the articles of confederation, the nation’s first constitution. in may, 55 delegates came to philadelphia, and the constitutional convention began. debates erupted over representation in congress, over slavery, and over the new executive branch. the debates continued through four hot and muggy months. but eventually the delegates reached compromises, and on september 17, they produced the u.s. constitution, replacing the articles with the governing document that has functioned effectively for more than 200 years.

i think the answer is: cuba wanted to be independent from spain, and the u.s. wanted to end spanish rule in the west.

hope i

-lavira : )