Final answer:
A 'state of war' between individuals arises when there is a deliberate intention to harm, characterized by a sedate settled design rather than spontaneous disagreements or declarations.
Step-by-step explanation:
According to section 16, a "state of war" arises between individuals when there is a deliberate intention to harm. This is typically interpreted as an act or series of acts committed by one party against another with the purpose of causing significant damage or injury, thereby triggering a hostile reaction. In historical context, a state of war often coincides with actions that display clear and intentional aggression, such as the firing on Union forces at Fort Sumter which led to the Civil War after deliberation and resolution to fight for a cause by both the North and the South. Contrarily, a state of war is not typically associated with incidental disagreements or spontaneous declarations, but rather with a sedate settled design or an orchestrated effort characterizing the hostilities between entities like England and France during periods of historical conflict.