Which factor contribute to the spread of Progressive ideas during the late 19th century and early 20th century?

The spread of Progressive ideas during the late 19th and early 20th centuries was largely influenced by rapid industrialization, urbanization, and the accompanying social issues such as poverty, labor exploitation, and political corruption. The rise of a more educated middle class, along with advancements in communication and transportation, facilitated the dissemination of reformist ideas. Additionally, grassroots movements and organizations, such as labor unions and women's suffrage groups, mobilized public support for progressive reforms, amplifying calls for social justice and governmental accountability.