Original sentence: It contains the country of Panama and the Panama Canal.The Isthmus of Panama (), also historically known as the Isthmus of Darien (), is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America.Vasco Núñez de Balboa heard of the South Sea from natives while sailing along the Caribbean coast
Edited sentence: It contains the country of Panama, Panama Canal and part of Colombia.The Isthmus of Panama (), also historically known as the Isthmus of Darién (), is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America until the construction of the Panama Canal.Vasco Núñez de Balboa heard of the South Pacific from natives while sailing along the Caribbean coast