Some studies have shown that eating chocolate before a test can increase brain activity, thereby causing students to score higher on exams. when these findings were announced, the price and quantity sold of chocolate increased in college towns. one reason for this could have been that the:

One reason for this could be that consumers increased their demand for chocolate. This is an example of the economic model called supply and demand. This a model that refers to the process of price determination through the demand of the consumers. When the quantity of the product demanded by the consumers equals the quantity supplied, then an economic balance is set.

The haitian revolution was the result of a long struggle on the part of the slaves in the french colony of st. domingue, but was also propelled by the free mulattoes who had long faced the trials of being denoted as semi-citizens. this revolt was not unique, as there were several rebellions of its kind against the institution of plantation slavery in the caribbean, but the haitian revolution the most successful. this had a great deal to do with the influence of the french revolution, as it to inspire events in haiti. the haitian revolution would go on to serve as a model for those affected by slavery throughout the world.