Select the correct text in the passage.
Which sentence from paragraph 5 best conveys Europeans' impact on the prairie?
(5) European man discovered the rich soils that exist in the prairies about 150 years ago. Finding the prairie soils outstanding for
crop
production, they plowed the prairie everywhere they could for the production of wheat, corn, and other domestic crops. Today
the most fertile and well-watered region, the tallgrass prairie, has been reduced to but 1% of its original area. This makes it one of
the rarest and
most endangered ecosystems in the world. The largest remaining area still left unplowed is in the rocky and hilly
region of Kansas called the Flint Hills. This physiographic region averages 60 miles wide and stretches from the Nebraska border,
south into northern Oklahoma.