Progressivism dominated US politics from the 1890s to the 1920s as reformers advocated for social change through government intervention. They sought to address issues like the gap between rich and poor, corrupt politics, unsafe working conditions, and poor living standards for many. The movement achieved some successes through muckraking journalism, political reforms at the state level, and new laws under progressive presidents like Roosevelt and Wilson. However, it largely failed on civil rights and making significant progress for racial minorities.