From the following theories/models thoroughly explain each of the theories:

• The Spiral of Silence Theory 
• The Agenda-Setting Theory 
• The Cultivation Theory 
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• In your explanation for each theory you choose, make sure you include a thorough theoretical conceptualization/definition of the theory, give the theory's most credited author(s) or creator(s) if required, and give a real-life example that would apply to each.