Why is theodore roosevelt important in american history?

Wow He was super important basically what he did was Developed the "Square Deal,"  Dissolved 44 monopolistic corporations and regulated railroad rates to protect the middle and working class He aslo Passed the Meat Inspection Act and Pure Food and Drug Act to better regulate food production and labeling.
There is a little more to the story with the square deal but this would get u by.

Ais 190 b is 200c it can't be more then 100%