In regions lacking modern engineering standards the greatest hazard during an earthquake is?

In regions lacking modern engineering standards, the greatest hazard during an earthquake is the collapse of poorly constructed buildings and infrastructure. These structures are often unable to withstand seismic forces, leading to widespread damage and potential loss of life. Additionally, inadequate emergency response systems can exacerbate the situation, making rescue and recovery efforts more challenging. Overall, the combination of vulnerable construction and limited preparedness significantly increases the risks associated with earthquakes in these areas.