Yellowstone is so pretty, I wish I could go. When was it established, though?
yeah it is gorgeous! It was established in 1972 when President Ulysses Grant was in office.
That guy who liked slaves? What did he do to establish those beautiful glades?
Not sure but he certainly did a great service for the park. It was the first ever national park in the U.S.  and is also known as the first national park in the world!
The first one, you say? What came after and how long was the delay?
I don't know but lets keep talking about Yellowstone. :) The park is known for its wildlife and many geothermal features like "Old Faithful geyser", which is one of its most popular features.
Old Faithful, a geothermal feature, does it affect any of the wild life creature(s)?
No the wildlife have learned to live with it. The park has so many ecosystems, but the subalpine forest is the majority of the park.
Oh, it's acreage mus be vast, how long is the expanse? 
It is pretty large! It extends all throughout the South Central Rockies forests ecoregion.