What was the reason for the colombian exchange

Explanation:

The Columbian Exchange is extremely important on many levels. The primary sphere of relevance is that it marked one of the first moments where there was a pure exchange of ideas, livestock, food, and goods between the world of "the West" and the "New World."

the answer should be arrogance & pride.

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.