The document discusses marriage ages across different time periods and cultures. It notes that in many places prior to the 20th century, including parts of Europe and early America, marriage at ages as young as 4-7 years old was common. The age of consent was typically puberty (12-14 years old) in these cultures. The document also discusses that in early Islamic law and culture, marriage required consent but could be arranged by parents for their daughters, though consummation did not occur until after puberty. It argues that Aisha's marriage to Muhammad at a young age was considered normal at the time.