Which statements about the extremes of poverty, wealth, and opportunity during the late 1800s are true? Choose all answers that are correct.

AMost Americans still lived on farms, even though cities were booming.
BThousands of children worked from sunup to sundown—and a few people began to pay attention.
CNew laws guaranteed that business owners did not take advantage of immigrants.
DUnions made sure that industrial workers shared in the prosperity of this boom time.