Why did Rockefeller testify in 1911

Rockefeller testified that Standard Oil achieved its position because its combination of cooperating companies was more efficient and produced a better product than its rivals

Critics accused Rockefeller of engaging in unethical practices, such as predatory pricing and colluding with railroads to eliminate his competitors in order to gain a monopoly in the industry. In 1911, the U.S. Supreme Court found Standard Oil in violation of anti-trust laws and ordered it to dissolve so John D. Rockefeller was summoned to testify before Congress.

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