The Era of Good Feelings.
Hajj unites Muslims because it brings them together to perform an act of worship towards God (Allah). They all perform Hajj to obey Allah and seek forgiveness. Hajj is also performed at a specific time (i.e in the lunar month of Thul-Hijjah) so a lot of Muslims congregate to do this mandatory act of worship.
No, woman were commonly only useful for cooking, cleaning and caring for children.
Answer:
The answer is 4 they had more than one calendar
