Who broke up monoply companies?

Answer 1

Monopoly companies were often broken up by government actions, particularly through antitrust laws. In the United States, significant cases include the breakup of Standard Oil in 1911 and AT&T in 1982, where the government intervened to promote competition and prevent abuse of market power. These actions were typically led by the Department of Justice and were motivated by the need to protect consumers and encourage fair market practices.