(D)The development of stone tools, because the neolithic age has to do with the development of human tools.
Ida B. Tarbell was an essential investigative journalist.
Besides being a journalist, Ida B. Tarbell was an American writer and a lecturer. She lived during the late 19th century and also during the oil boom. Furthermore, <u>she was one of the pioneers of investigative journalism and she mainly spent her life investigating about the oil industry</u> and advocating for world peace. One of her most famous works is <em>The History of the Standard Oil Company,</em> where she confrontates and exposes John Rockefeller's practices.
<span>Each level of government is divided into three branches: the legislative branch (which makes the laws), the executive branch (which carries out the laws), and the judicial branch (which applies the laws to specific court cases, determines whether someone has broken the law, and evaluates laws to make certain </span>
Explanation:
racial segregation was a system derived from the efforts of white Americans to keep African Americans in a subordinate status by denying them equal access to public facilities and ensuring that blacks lived apart from whites
