As two powerful earthquakes hit Venezuela, west of Caracas, in quick succession on Wednesday, the country’s capital sustained extensive damage.Authorities were continuing to search for people under the rubble of collapsed buildings on Friday as 235 people were confirmed to have been killed, with 4,300 more injured.Here is more about why Caracas has sustained so much damage.How badly damaged is Caracas?A magnitude 7.2 earthquake struck about 160km (100 miles) west of Caracas, followed less than a minute later by a magnitude 7.5 tremor, the strongest since 1900, according to the US Geological Survey (USGS).Jorge Rodriguez, head of Venezuela’s national assembly and brother of interim President Delcy Rodriguez, said earlier in the day that 200 people had been trapped, with 250 buildings damaged or destroyed nationwide.In Caracas and nearby coastal areas, at least eight hospitals, the headquarters of the Venezuelan Red Cross and the French embassy were among buildings reported to have been badly damaged.Initial assessments released on Thursday put the estimated economic damage at between 1 and 7 percent of Venezuela’s $111bn gross domestic product (GDP). Authorities have not yet provided a separate estimate for losses in the capital.However, the heaviest damage has been reported in Caracas itself, Al Jazeera’s Teresa Bo, reporting from Bogota in neighbouring Colombia, said on Thursday.Public infrastructure was also heavily damaged, with acting President Rodriguez reporting power out …