Final answer:
Transnational organized crime (TOC) refers to crimes that cross international borders and require coordinated international efforts to combat due to their exploitation of government corruption and presence in states with weak justice systems.
Step-by-step explanation:
The term that specifically refers to crime occurring across multiple national borders is transnational organized crime (TOC). TOC groups engage in criminal activities that transcend national boundaries, making them a significant threat to both national and international security.
These groups exploit government and law enforcement corruption, and thrive in states with weak domestic criminal justice systems. As such, a coordinated international effort, involving domestic organizations like the FBI and international entities such as the United Nations Office on Drug and Crime, is essential in combating TOC.