During the Progressive Era from 1880‐1920, Americans began to initiate laws, create

referendums to change current laws, and recall politicians from their elected positions. These are examples of which constitutional principle?

Group of answer choices

Popular Sovereignty

Separation of Powers

Federalism

Popular Sovereignty

Explanation:

The Progressive Era was a period of social activism and political reform in which many civilians participated (direct democracy) in order to reform the vertical (hierarchy) political system. Among the targets were the political machines with their corrupt and malfunctioning representatives.

Popular Sovereignty, that dates back to the Enlightenment, is the purest of  (and most horizontal) democratic government, in the sense that the goverment´s purpose should be to protect (the civil rights) and serve the people, and not the other way around. And if they fail to do, or are corrupt or both, so they should be replaced.  

b or c im pretty sure

answer: look it up on quizlet thats where the answer was found

explanation: