The Jackson Era, which took place from the mid-1820s until the 1840s, was the time of the transformation of the United States from a patriarchal country into a state in which industry was rapidly developing, and the development of western lands was intensively going on, where plantation slavery firmly, although contradictory, entered the structure of the country.
The struggle of broad strata of the population for the democratization of political life immeasurably expanded the ranks of the electorate in comparison with the previous period. Old political parties collapsed and new ones emerged, forced to adapt to the changed conditions of political life.
In turn, during the Progressive Era, which lasted from the 1890s until the 1920s, the main feature of the period was the rise of the middle class, as well as the social and political action in highlighting the problems of industrialization, urbanization, immigration, centralization and political corruption.
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