Most believe that the towers could have survived the impact if it weren’t for the ten thousand gallons of jet fuel which made the crash worse. Since steel softens at 1000° F and the towers’ structure was mainly built of steel, the buildings no longer had anything to hold themselves up (Corona 87). It is also believed by most architects and engineers that it was the melting steel structure that initiated the collapse (Corona 91). In order to mend this issue, architects began to combine steel with concrete or other strong, sturdy material (Corona 87). They have learned what improvements are required when designing buildings in order to prevent a huge collapse from happening again. Thus North America has heightened security due to these improvements.
Hence, North America’s security has drastically increased as a result of improvements established after 9/11. Many adjustments were made in airports in order to increase their security. The government refined their own security system for the sake of making the continent a safer place. As well, architects and engineers were able to play their own part in improving the continent’s security by designing new and strengthened buildings that can withstand heat and collapses. Overall, these improvements have helped North America become shielded against future