Original sentence: Anglophones commonly misspell Colombia as "Columbia", and usually pronounce both names identically.The establishment of a "Republic of Colombia" in 1819 (followed by the United States of Colombia in 1863, and finally the modern Republic of Colombia in 1886) may have resulted in Columbia "no longer being available as a national name" for the United States
Edited sentence: The establishment of the nation of Colombia in 1819 resulted in the name "no longer being available as a national name" for the United States.This has been a source of confusion, for many anglophone speakers misspell Colombia's name as "Columbia", forgetting that "Colombia" is a more proper derivation from the discoverer's original Italian name, "Cristoforo Colombo"