The growth of the empire continued to increase their confidence.
Theodore Judah was the person who convinced the railroad officials that it was possible to build a railroad line across line across the Sierra Nevada Mountains.He is also considered as the "Father of first Transcontinental Railroads.Judah had many opportunities that the people prior to him did not have.
Answer:enslaved people in the border states of Missouri, Kentucky, Delaware, and Maryland, which had not joined the Confederacy.
Explanation: