In 1902 President Teddy Roosevelt started the process of breaking up trusts and monopolies, which meant the government was regulating how much of a given industry one person or group of peoples could own. This is an example of which kind of economic system? In 1902 President Teddy Roosevelt started the process of breaking up trusts and monopolies, which meant the government was regulating how much of a given industry one person or group of peoples could own. This is an example of which kind of economic system? A. Mixed B. Command C. Traditional D. Market