The general theory relates to supply and demand. In such that the costs associated with the overall supply, including managing, transporting and manufacturing of the goods, along with the demand the amount of goods or services required by a given population. When a supply is plentiful and there is less demand, the good or services general decrease in cost. When there is less supply, than there is demand, the good or service increases in cost. So If a necessity is less expensive than an unnecessary item, it could be based on the simply supply and demand issue. Or it could be related to the fundamental costs stated previously, in that in order to manufacture and/or produce the goods or services for the necessity it costs less and there is a high supply to meet the high demand, where there is a low supply to meet a low demand for the unnecessary product or service.
<span>Colleges and Universities founded for the African Americans
didn’t allow women to be admitted in these schools. These schools also offered literacy courses to
the former slaves, but only for men. The
school for African American is still all about suppressing the blacks with the
different opportunities that they could have.</span>
(This answer will be in the context of 15th-century history.)
Simply, more exposure to diseases from animals means better immunity in the long run.
As Europeans were exposed to these diseases, they will likely have issues at first. But, their bodies will develop immunity towards these diseases to the point where many bacteria cannot even affect them at all.
Let's look at a civilization that mostly did not have livestock, Native Americans. They were pretty clean and healthy. That is because there were no diseases to kill them until the Europeans came to North America. For example, the flu virus was something a European could handle with a little bit of rest. On the other hand, the flu virus wiped out most of the Native American population since they never had exposure to it.
