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He was the second of four children born to Theodore Roosevelt Sr. and Martha "Mittie" Bulloch Roosevelt. -
Roosevelt was the vice president who became president after the assassination of William McKinley -
a major labor conflict that threatened an energy crisis, as 150,000 miners demanded better pay and working conditions from wealthy mine owners -
a federal law signed by President Theodore Roosevelt that aimed to end discriminatory railroad practices, and particularly the use of rebates -
Roosevelt named this the first national wildlife refuge to protect brown pelicans and other birds from being hunted for their feathers -
After the assassination of President William McKinley, he was elected to his own full term in 1904, defeating Democratic candidate Alton B. Parker -
Established Yosemite as a national park, protecting the high country -
Prohibited the interstate sale of food and drugs, and prevented the introduction of dangerous ingredients into food and medicines -
Recognized as America's first national monument -
Three weeks after leaving office, Roosevelt began a year-long, Smithsonian-sponsored safari and expedition in Africa. -
After Roosevelt failed to win the Republican nomination from President William Howard Taft, he and his people formed their own party, named the Bull Moose Party