Well there are two ways of really explaining this, but "The Common Good" by definition is something that benefits or interests of everyone.
The political term, is literally the same thing; "What is shared and beneficial for most members of a given community"
Hope this is the answer you are searching for.
The Progressive Era was a period of widespread social activism and political reform across the United States, from the 1890s to the 1920s.[1] The main objectives of the Progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and corruption in government.
The answer is 5 presidents as of 1/20/17.
1. Obama
2. Clinton
3. Carter
4. Bush
5. The other Bush