Final answer:The Progressive Era was a time of social activism and political reform in the US, aiming to address industrial revolution-derived issues.'Muckrakers',journalists who exposed societal struggles, played pivotal roles in this period. Progressives aimed for perfect democracy, efficient governance, promoting science and technology, and social reform.Explanation:TheProgressive Erawas a period of widespread social activism and political reform in the United States that spanned the late 19th to early 20th century. It sought to address the social issues and inequality triggered by the industrial revolution. Notably, the muckrakers' role was crucial at this time as they shed light on the societal problems to their middle-class audience.Muckrakers, essentially journalists, chronicled and exposed societal issues prevalent during that timeframe, propelling the general public's awareness and prompting citizens to address the challenges. They highlighted oppressions, such as the plight of child factory workers, the urban poor, and many unnoticed individuals.Several fundamental principles unified theProgressives. Their primary goals were to perfect democracy, necessitating the expansion of suffrage rights, and the restriction of political participation for those deemed 'unfit'. They strived for efficiency, science and technology use, professionals' expertise deference, and looking to the government to regulate the modern market economy. They identified themselves as agents of social justice and reform, aiming to help the workers and urban poor.TheProgressivesalso maintained the courage to hold the government accountable. They demanded safer working conditions for factory workers, fought for better housing for the working poor, and advocated for the prohibition of alcohol, which they saw as one of the primary issues troubling the working class. Towards achieving their reforms, they often relied on the issues publicized by muckraking journalists.Learn more about Progressive Era here:brainly.com/question/17162211#SPJ3...

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