HeLp!! Explain the causes of the Columbian Exchange and its effects on the Eastern and Western Hemisphere.

The arrival of Europeans in the Americas brought more than a clash of peoples and cultures. It also brought a movement of plants, animals, and diseases between the Eastern and Western hemispheres. One result of the Columbian Exchange was the transfer of diseases from Europe to the Americas

Explanation:

are these the benchmarks questions?

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.