The Gulf of Tonkin Resolution . Ended U. S. Involvement in Vietnam and all of Southeast Asia gave Congressional support to Johnson's Great Society programs was a formal declaration of war by Congress against North Vietnam allowed President Johnson to expand U. S. Involvement in Vietnam

Right choice:

It allowed President Johnson to expand U.S. involvement in Vietnam.

Explanation:

The Gulf of Tonkin resolution was the Congress response to an alleged North Vietnamese attack on U.S. vessels in international waters of the gulf in 1964. It gave great, additional powers to president Lyndon B. Johnson. It authorized him "to take all necessary measures" to repeal attacks on US forces and "to prevent further agression" from the communist North Vietnam. The congressional resolution sanctioned the administration´s intentions to escalate U.S. military involvement in Vietnam, according to historians.

the social contract theory

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.