Engineering as i’ve learned it it the building and construction of structures within societies. It can be irrigation cannals with the Tono O’ohan society of the southern states or the grand dome of Hagia Sopheia in Turkey. Engineering is not just about building houses and it can be as profound as centralizing structure from which a society is developed for example with the Incans.  I think engineering is often over looked with history but the way buildings and structures are built, the materials used and thier appearance are incredibly powerful clues to the past of societies. And by observing this we can also learn how to preserve these historical pieces and improve or own structures. When researches studied Hagia Sophea for structural integrity they found the the materials and composition was extremely well suited for the earthquake frequented area which has allowed for it to endure thousands of years.  After testing a model of structure in simulations they found that the largest recorded earthquake in man kind would have to be tripled to destroy the structure. I think this kind of discovery is incredibly insightful not only in the countries history but how valuable knowledge of the past can be in the present.