It started in 1954 and ended n 1974
The first one, after the 4th crusade which saw the sacking of Constantinople by the crusaders who had been stranded there waiting for their payment from the emperor of the Byzantine empire, let's just say that the Byzantines weren't big fans of western Europe for a good while, but I could be wrong so wait for other answers :)
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Answer:
The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s. The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.
Explanation:
