Julius Caesar was the roman leader that was appointed dictator in 44 BC.
When the body is given weakened/dead pathogenic material this helps build up an immune system towards the actual live infection. It prepares the body for the infection so that the person does not get sick.
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>