The conservatism of Taft was the main reason for Roosevelt to split and run for the presidency again.
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Explanation:</u>
Theodore Roosevelt and William Howard Taft were close friends but, the thing that separated them from each other was, their thinking. When Roosevelt became the President of the US, he brought out many progressive policies, and most of them passed in Congress.
On the other hand, William Taft had exact opposite thinking, he was a man with conservative thinking and limited himself to this particular approach. He became the US president but, his conservative ideas were against Roosevelt's thinking, and due to this, Roosevelt chose to split and form the Progressive Party and run for the presidency.
Federalism in the idea of the power being shared between the national and state level. checks and balances to keep the government from becoming tyrannical.
Religious persecution, promise of new wealth and more land
It gave further power to the Interstate Commerce Commission.
The Mann-Elkins Act continued the federal government's authority to regulate railroad rates and telecommunication and expanded the power of the government to regulate telephone, radio, and telegraph companies.
The Mann-Elkins Act was passed in 1910 during the Progressive Era. The act was passed as part of a series of laws to regulate segments of the economy. During the Gilded Age the government passed regulation over the railroads and communications giving the government the power to set prices and prevent gouging of industries needing those services to survive. In the 1910 act, the government was provided the power to regulate the companies owning telephone, telegraph, and radio services.