3.CAUSATION

1)A train, owned by Southern folk and Northern, while traveling, causes sparks which start a nearby field of grass on fire.Should Southern folk and Northern liable for the damage to the field?

Result: Yes.

Reason:

2)Same as #1, but before the grass starts on fire, lightning strikes and burns the field.

Result:

Reason:

3)Same as #1, but as the sparks start the fire and spread lightning also strikes and burns the field.

Result:

Reason:

4)Same as #1, but the fire reaches 100 miles away to a chemical dump, causes an explosion which causes contamination of land around.

Result:

Reason:

4.DAMAGES

1)"A" injures "B" by breaking "B"'s leg. "B" fails to go to the hospital because he feels he does not need it. "B" gets an infection, and the leg is amputated.To what extent should "A" be liable?