<span>Planned modification is a method of changing behavior through unstructured group interaction. By observing how certain individuals interact with each other in a group setting, the person or group conducting the experiment can strategize how best to move forward. Based on information gathered during their observations, they can more easily develop a plan to carry out the behavior modification.</span>
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Instead of placing authority in the hands of one person, like a king, or even a small group of people, the U.S. Constitution divides power. Power is first divided between the national, or federal government, and the state and local government under a system known as Federalism.
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<h2>mark as brainlest answer</h2>
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B i would say but possible D????
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Stalin ruled by terror and with a totalitarian grip in order to eliminate anyone who might oppose him. He expanded the powers of the secret police, encouraged citizens to spy on one another and had millions of people killed or sent to the Gulag system of forced labor camps. During the second half of the 1930s, Stalin instituted the Great Purge, a series of campaigns designed to rid the Communist Party, the military and other parts of Soviet society from those he considered a threat.
