SEC was an organization created during Roosevelt's New Deal to ensure that stocks were not fraudulent and that they were being traded properly without abuses.
They started to create more safety precautions. Airport security has been upgraded to extremes with scanners and xrays. Border security has also been emphasized on. The US has taken countless steps, alot of which are directed towards defence
Renaissance thinkers encouraged individuals to question how things work, and scientists began to test these ideas with experiments during the Scientific Revolution.