Answer:
Rice..
I'm pretty sure about that
<span>At the dawn of the American Revolution, 20 percent of the population in the thirteen colonies was of African descent</span>
Answer: Social media or Social networking services.
Social media is an interactive form of communication that allows users to interact, share information, ideas, career interests and other forms of expression and connect with each other generally by means of the internet. The include various categories and virtually every body from different niche of life can find a platform to thrive. They include; blogs; business networks; forums; microblogs; photo sharing; products/services review; social gaming; video sharing; virtual worlds etc.
Answer: <u><em>Stimulus Substitution</em></u>
Explanation: In Pavlov experiments, when a neutral stimulus becomes conditioned paired together with an other unconditioned stimulus. And also called stimulus substitution because it can replace the first one with the new stimulus. Pavlov did many experiments about the stimulus, and changed a lot.
CBS, the Columbia Broadcasting System