Dehyphenation is the removal of a hyphen it hyphens.
Answer:
Oregon Trail
Explanation:
The Oregon Trail was a 2,000-mile, historic east-west wagon route and emigrant trail that connected the Missouri River to valleys in Oregon and locations in between. The eastern part of the trail spanned part of the future state of Kansas and nearly all of what are now the states of Nebraska and Wyoming.
Studies show that daily, every 50 minutes, one person dies from a drunk driver.