1. La calzada romana
uso:destacaban la movilización de grandes ejércitos con una rapidez nunca vista
Hormigón
uso:permitió que los edificios construidos no estuvieran solamente hechos de piedras apiladas y mortero.
It would be the cities of "Atlanta and Savannah" that were nearly burned to the ground late in the Civil War, since the Union Army soldiers who occupied these spaces briefly wanted to implement a "scorched earth" policy. <span />
Black death reached england in 1348 -1350 hope tht helps
