•what is manifest destiny? why do americans feel they have the right to practice it?

Manifest Destiny was a religious, political and social doctrine in the 19th century that stated that the United States was destined to expand across the Americas. People who supported this ideological position believed that it was the duty of the United States to conquer the whole continent and impose its culture on other countries.

Americans felt they had a right to practice this doctrine because they believed themselves to have the best institutions, the best values and the best beliefs in the continent. They also believed that, as recipients of these superior values, it was their duty to carry these virtues everywhere else.

answer; ///i believe that the correct answer is refrigerants,(like r12) and aerosol

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.