President Theodore Roosevelt<span> became </span>known as the "trust buster" in 1904 when his administration used the Sherman Anti-Trust<span> Act to break up the Northern Securities Company.</span>
Well what is the list provided?
A primary source comes from a first-hand witness's point of view which makes the information from that source more valid than a secondary.
Primary sources provide direct account information, Secondary sources describe, interpret, analyze, summarize and evaluate the views offered by primary sources. Good examples of secondary sources include opinions offered in newspaper articles, movie or book reviews and biographies.