The Roman was the victim of many ills including over-expansion, climatic change, environmental degradation and poor leadership. What are the forces that precipitate or delay a collapse? And do we see similar patterns today?
At least 141 people have died after a pedestrian suspension bridge collapsed in the western Indian state of Gujarat on Sunday evening. Most of those who died were women, children or elderly. The 230m (754ft) bridge on the Machchu river in Morbi was built in the 19th Century. It had reopened just a week ago after repairs. The Gujarat government has opened an investigation into the tragedy.