Hi there!
The Judiciary Act of 1789...
C. Allowed John Marshall to become the Chief Justice
The office of Chief Justice did not exist prior to the Judiciary Act of 1789 and established the office. This in turn allowed John Marshall to become the chief justice. The other options, while true in history, are not related to the Judiciary Act of 1789.
One of the first exchanges, the horse.
Answer: Rasputin's Influence
Explanation: After he was blamed for Russia's military losses during WWI, the tsar's popularity continued to fall because of Rasputin's Influence.