In the first decades of the twentieth century, Theodore Roosevelt coined the term to describe writers who agitated for change by targeting powerful political and industrial people and institutions.

muckrakers

Explanation:A muckraker spreads scandals, usually for political advantage. Being a muckraker is considered sleazy. Muck can mean feces or dirt, and a rake could spread it around. ... Many politicians are muckrakers when they talk trash about their opponents.

The muckrakers were reform-minded journalists in the Progressive Era in the United States (1890s–1920s) who exposed established institutions and leaders as corrupt. ... The modern term is investigative journalism or watchdog journalism; investigative journalists in the US are often informally called "muckrakers".

Muckrakers is the correct answer

Explanation:

Muckrakers were investigative reporters and writers (Journalist) during the Progressive Era (1890–1920) who wrote about corruption and injustices in order to bring about changes in society.

The original muckrakers were a core group of fifteen journalists writing for McClure’s Magazine in the first part of the 20th century. Among other topics, they took on corporate power, the big trusts, and government corruption. This band of journalists included Frank Norris, Lincoln Steffens, Ida Tarbell, Upton Sinclair, and Jacob Riis, as well as many others.

labor leaders and organizations had the power to demand it.

explanation:

workers got a five-day workweek because the bcea protects and respect the rights of the employees. labor leaders and other groups demanded it.