Question

1. how long did men, women and children have to work in factories at the beginning of the industrial revolution?
2. why was working conditions dangerous at the beginning of the industrial revolution?

Explanation:

The questions are about the Industrial Revolution, focusing on work durations of different groups and working conditions. This falls under History (a subfield of Social Science) as it involves studying past events, social and economic changes during the Industrial Revolution.

Answer:

The subfield is History (under Social Science).