During the 19th century, the age of consent in the United States varied between 10 and 16, depending on the state and year. Was pretty much the same everywhere around the world. You could marry a 9 or 10yo girl. marrying her means you gotta take care of her and be on good terms with her family, not just a girl at the park some nigger raped and threw away like trash.
https://www.theclassroom.com/age-marriage-us-1800s-23174.html
https://en.wikipedia.org/wiki/Marriage_age_in_the_United_States