Answer:
During the U.S. Civil War, Cornelius Vanderbilt donated his largest and fastest steamship, named the Vanderbilt and built for around $1 million, to the Union Navy. The vessel was used to chase down Confederate raiders. In 1813, Vanderbilt married his cousin Sophia Johnson, and the couple eventually had 13 children.
The question asks to find who was Emperor Justinian's most trusted advisor, and based on my further research and my analysis on the said question. The answer would be Empress Theodora. I hope you are satisfied with my answer and feel free to ask for more if you have question and clarification
