I think the answer is either A or B
B. child laborers and D. miners
Hope this helps :)
A reason why the Civil War lasted four years is that the Union had to fully conquer the South.
In 327 B.C., Alexander marched on Punjab, India. ... Alexander wanted to press on and attempt to conquer all of India, but his war-weary soldiers refused, and his officers convinced him to return to Persia. So Alexander led his troops down the Indus River and was severely wounded during a battle with the Malli.