The law of supply states<span> that the quantity of a good supplied (i.e., the amount owners or producers offer for sale) rises as the market price rises, and falls as the price falls. Conversely, the </span>law<span> of demand (see demand) says that the quantity of a good demanded falls as the price rises, and vice versa.</span>
<span>The largest
experimental statistical study that has happened in the past and was conducted
for is the Public Health Service Experiment that has happened in the year 1954,
this experiment has been conducted because of the Salk Vaccine, which is also
known as the Polio Vaccine.</span>
Erik Erikson is the father of the <span> theory of psycho-social development, which includes 8 stages</span><span>
Erik Erikson attributed more importance to children's social relationships than to unconscious processes. The development of social relationship is the most important event in the adolescence stage, because t</span><span>eens need to develop a sense of self and personal identity. </span>
Ancient Egypt ,separated by periods of relative instability known as the Old Kingdom of the Early Bronze Age, the Middle Kingdom of the Middle Bronze Age and the New Kingdom of the Late Bronze Age.
