Their methods have been heavily criticized over the decades for creating trusts and monopolies that enabled them to thwart smaller competitors.
They were blamed by both anticapitalists and libertarians for their methods.
the answer is: the sesquicentennial of the american civil war is an occasion to consider the legacy of that great conflict. this legacy is our inheritance, and despite many indelible features, we continue to negotiate the resolution of that conflict. the civil war was fought over slavery, but not always on behalf of slaves