Answer:
C
Explanation:
incentive for men to stay, marry and settle down
Valentine's Day, also called St. Valentine's Day, holiday (February 14) when lovers express their affection with greetings and gifts. The holiday has origins in the Roman festival of Lupercalia, held in mid-February. ... At the end of the 5th century, Pope Gelasius I replaced Lupercalia with St. Valentine's Day.
Fifteenth amendment
The 15th Amendment granting African-American men the right to vote was adopted into the U.S. Constitution in 1870.