The answer is b. because she discovered a comet.
Answer:
Imperial forces opened fire on the demonstrators, killing and wounding hundreds. Strikes and riots broke out throughout the country in outraged response to the massacre, to which Nicholas responded by promising the formation of a series of representative assemblies, or Dumas, to work toward reform.
Explanation:
Now it is Tom Perez ( modern )
Andrew Jackson is the founder of the Democratic Party so he is the first leader of the Democratic Party (without the word "modern")
I have no idea is it correct or not.