What is the best title for this list?

What does this quotation from the introduction of thedeclaration of independence do?

Black death spread because of what problem in medieval europe? which one is it i need the answer quick . a- overcrowded cities b-too many farm animals c-not enough qualified doctors d-all of the above

Aryans believed that the most important thing in life was warfare. if this statement is true, which of the following facts best supports it?