What was the name given to a group of investigative journalists and writers that began stimulating interest in reform during the late 1890s?

The name given to a group of investigative journalists and writers that began stimulating interest in reform during the late 1890s was Muckrakers

Explanation:

The muckraker was a term given to a group of American writers that researched the industrialized environment of America in the era as well as the impact of the reforms and the centralization o wealth thanks to a politic orientation that only seemed to benefit the aristocrats by abusing the working class. Also, they were pursued by the political and economic figures of the time mentioning then even in a presidential speech in which they were called a biased group that didn't look the bigger picture and focused on the bad side of the situation instead of looking all the good at reach.