How Progressive was the Progressive Era?

*Workers and Working Conditions
During the progressive era the workers that worked mostly consisted of child laborers and the lower-class people. Progressivism included a wide range of economic, political, and social reforms.
How did these things Progress during the progressive era?
What were they?
Is this only in America?
When did the progressive era begin?
How did it end?
What types of people were part of the progressive era?
Are we heading into progressive era today?
RESEARCH!!