I believe the answer is: The sector Model
The sector model was popularized in 1939 in order to create <span>concentric zone </span>model<span> of city development. Using this model for building a city would give the city enough space for important infrastructure to be bulit and enough space for outward expansions of the city.</span>
The answer is early and extensive behavioral treatment. Studies show that early intervention for children with autism helps enhance their mental and intellectual ability plus it also diminishes symptoms of autism. This treatment involves Early Start Denver Model, which is intended to promote social skills and learning. Researchers found out the 2yrs after completing the treatment, these children showed overall progress in their communication and intellectual abilities.
The major purpose of the Truman doctrine was to stop Soviet imperialism during the Cold War. This was because the Soviets had a communist way of life, which the American people felt threatened by as the Soviets were encroaching in different parts of the world and the Americans did not want a take-over of this kind globally.
The most powerful person (politically, not economically) in Germany now is its Chancellor (it is always the Chancellor), who at the moment is Angela Merkel. Merker is the head of the German government which is responsible for most of the functions of the country (but not for making laws).