How is this a history question-
During the World War II the industry and the manufacturing of weapons by the war production plants was a major enterprise and the need for a trained security increased exponentially. The on site security was needed to prevent theft, sabotage and espionage. The security companies even started training their own security staff which was well trained and their training in time was close of that the police got. Some companies even had their own private investigators among their number.
The mesosaur fossils found on the South American and African continents are explained most easily if the mesosaur swam from one continent to the other.
FALSE.
I do not think it is a complete sentence because, what's behind the door?