PLEASE HELP!! What was a main cause of the American Civil War?

Question 16 options:

the passage of amendments that gave blacks citizenship and the right to vote

the question of whether slavery should be allowed in new territories

the issue of foreign nations that supported the South's economy

the development of industry and manufacturing in the North

the 1 one

Explanation:

can i please get a brainless

the main cause of Civil War was slavery.

answer:   c. the drafting of common sense

explanation:

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.