Which of these innovations was used in the inca empire and the roman empire? a. building aqueducts to carry water over gorges b. constructing rope bridges over canyons c. building floating gardens on marshes d. constructing an extensive network of roads

the answer is D. Constructing an extensive network of roads

do u have any answer choices man?

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.