The answer is c.
I hope this helps.
The scholars immediately disagreed over the causes of the war and they still disagree today.
Many maintain that the main cause of the was that the southern states desired to preserve the institution of slavery.
Others minimize slavery and point to other issues, taxation and principle of States' rights.
Blood urea nitrogen (BUN) and creatinine tests can be used together to find the BUN-to-creatinine ratio (BUN:creatinine). A BUN-to-creatinine ratio can help your doctor check for problems, such as dehydration, that may cause abnormal BUN and creatinine levels.
