Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: In 1861, parts of Caldwell County, Burke County, McDowell County, Watauga County, and Yancey County were combined to form Mitchell County.

Parts of Caldwell County, Burke County, McDowell County, Watauga County, and Yancey County formed Mitchell County in 1861.