Final answer:
The National Industrial Security Program (NISP) is an extension of the national security policy, which was significantly shaped by the National Security Act of 1947 that established key organizations for US security including the Department of Defense and the CIA.
Step-by-step explanation:
The establishment of industrial security programs within the National Industrial Security Program (NISP) is linked to historical developments in the United States' approach to national security.
Following the National Security Act of 1947, signed by President Truman, organizations such as the Department of Defense, National Security Council, and the Central Intelligence Agency (CIA) were created.
These organizations play a pivotal role in shaping the national security policy and, by extension, the mechanisms for protecting classified information within the private sector industries that form part of the NISP.