Answer:
The answer is A I believe.
Explanation:
I looked up this question before.
Its positive economic impact
Hi first of all is this a part of your assignment and I don't know but I'm still going to answer cause you got like no info because it was the right thing to do
Since 1923 a rock found with inscriptions have been studied. The symbols look just like Viking Runes that would sustain the theory that Vigings have been to America long before Columbus. The theory is however contested by experts, some of which thinks that itis a hoax. The rock is known as "the Heavener Runestone".
I believe it is the Doctrine of Nullification
