Answer:
Work break down structure management technique was developed by the US Defense Establishment
Step-by-step explanation:
It is basically brought by the US Defense establishment. Work break down structure is the term which is closely related to system engineering. Here the whole project will be broken in to small parts where each part will be given to the specific team and the finally all the sub parts will together form a project as a whole.
This system of approach is necessary or essential because, a whole project be taken care by single team, or even if it happens there will be a huge time delay.