How did the establishment of yellowstone national park change america?

With the establishment of yellow stone park, there was a huge damage done to the economy of the country but it would have the world's largest geysers.

Explanation:

The Yellowstone National park was established in 1872 in the United States of America. It got very famous because it had the most famous geyser and more than half of the geysers in the whole world and had great biodiversity in it. It also got famous because of it's huge size.

But because of the volcano in this national park, there is huge loss done to the economy of the country. If put in dollars, the loss triggered by the volcano is approximately $3 trillion which is around 16% of the GDP of the country.

c is the correct answer for this question.