The correct option is B.
Secondary murder refers to the unpremeditated killing which result from an assault in which the death of a victim is a distinct possibility.
There are three typical cases that can constitute secondary murder, these include:
1. A killing done impulsively without premeditation but with malice aforethought.
2. A killing that result from an act which was intended to cause serious bodily harm.
3. A killing that result from an act that shows that the perpetrator is indifference to human life.
The term that would be associated with this event is "colonization", since in fleeing persecution and coming to North America to form a new life on new land, these Puritans were forming a colony.
The main reason why the Han dynasty and the Western Roman Empire collapsed was immigration. The Hun dynasty suffered emigration of nomadic people to northern China and the Western Roman Empire was invaded by Germanic invaders (Vandals, Ostrogoths, and Visigoths).