Inner family marriage is not unique to Islam. Christianity for a long time thought it was no big deal. The ancient Egyptians used to marry off family members to some degree.
Most of antiquity thought of children, but especially girls as a commodity to barter between families to create a bigger resource bond. Pre arranged marriages were quite common in in most of antiquity, and since the mortality rate was much higher back then, a female would have been considered ready for bartering/sex upon their earliest period. Usually between the ages of 9-14 on average.
If you google search country laws about marriage even in the west it can be in the low to mid teens depending. It wasn't that long ago in America that even the age of 14 was acceptable in some places.
I really warn about focusing on one religion, most of antiquity worldwide displayed the same behaviors when it came to patriarchal society. Men were widely thought of as the king of the house, girls/women were considered property and men had the power back then to tell them what to do and who to marry. That was not just in Islam, but in most of antiquity including polytheism.
Most of antiquity thought of children, but especially girls as a commodity to barter between families to create a bigger resource bond. Pre arranged marriages were quite common in in most of antiquity, and since the mortality rate was much higher back then, a female would have been considered ready for bartering/sex upon their earliest period. Usually between the ages of 9-14 on average.
If you google search country laws about marriage even in the west it can be in the low to mid teens depending. It wasn't that long ago in America that even the age of 14 was acceptable in some places.
I really warn about focusing on one religion, most of antiquity worldwide displayed the same behaviors when it came to patriarchal society. Men were widely thought of as the king of the house, girls/women were considered property and men had the power back then to tell them what to do and who to marry. That was not just in Islam, but in most of antiquity including polytheism.
