What major external event provided massive validation and expanded the use of containerization rapidly in the late 1960s?
Answer
The Vietnam War
The US military utilized Sea-Land extensively to manage the deployment of supplies and equipment during the Vietnam War, forcing global ports to adapt rapidly.

Related Questions
Who originated the logistical revolution known as containerization?What was the method of moving goods before McLean's intervention, requiring manual loading of sacks and barrels?What engineering feature did Keith Tantlinger design to allow cranes to lift the standardized boxes precisely?On what date did the SS *Ideal X* depart on its seminal container voyage?What crucial cost benefit was demonstrated by the first voyage compared to manual loading rates?Why did McLean pivot away from shipping the entire truck chassis after his first voyages?What critical business decision allowed McLean's container design to become a universal global standard?What major external event provided massive validation and expanded the use of containerization rapidly in the late 1960s?What standardized dimension defines the length of the common ISO container box?What was Malcolm McLean's initial business venture launched with his siblings in 1935?