Your question is incomplete and missing the requirements, but by googling the question I could find that this belongs to Sociology chapter 12.
The answer for your question would be heterosexism because heterosexism is defined as " a systematic disadvantage embedded in our social institutions, offering power to those who conform to hetereosexual orientation while simultaneously disadvantaging those who do not"
Answer:it changed cause back in the day kids would have to work in factories but now they have laws against it and same goes with the hours of work and the safety
