Ancient Civilizations in Mesopotamia had which characteristics? (Select all that apply). A. They had economies based on agriculture and trade.
B. They mainly used a bartering system to conduct business.
C. They had mainly "polytheistic" religions, (worshipping multiple gods).
D. They did not use metal tools.
E. They were ruled by powerful kings who often had absolute authority.
F. They lived in tents.

oil! is what i am assuming

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.

these acts divided the south into five military districts.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: