They helped with social reforms such as race, sex, etc
Answer:
"Buying on margin" is borrowing money from a broker to purchase stock.
Explanation:
You can think of it as a loan from your brokerage. Margin trading allows you to buy more stock than you'd be able to normally. To trade on margin, you need a margin account.
D. Most of the human anatomy started on dead body autopsies.
I would have to go with Completion of the transcontinental railroad in 1869