IDNLearn.com: Your one-stop destination for finding reliable answers. Discover in-depth and reliable answers to all your questions from our knowledgeable community members who are always ready to assist.

Business leaders were called "robber barons" by some because they

a
created powerful corporate empires.
b
used unfair businesses practices to amass wealth.
c
fueled the nation's economic growth.
d
contributed large amounts of money to philanthropic causes.