It was most successful in Pax Romana. It was hard to maintain because of all the people and enemies.
Answer:
The Progressive movement was a turn-of-the-century political movement interested in furthering social and political reform, curbing political corruption caused by political machines, and limiting the political influence of large corporations.The Progressive Era (1896–1916) was a period of widespread social activism and political reform across the United States of America that spanned the 1890s to the 1920s.the programs established during the Progressive Era were,
Purification to eliminate waste and corruption was a powerful element, as was the Progressives' support of worker compensation, improved child labor laws, minimum wage legislation, limited work hours, graduated income tax, and women's suffrage.
Before the events of the Progressive Era occurred (1890-1920), American society was much different. ... For example, there are laws that regulate the quality of food that is sold to American citizens, the wage that is paid to workers, and the work conditions that are endured by American workers.
In August 1945, the US dropped atomic bombs over Japanese cities, Hiroshima and Nagasaki. Hope this helped!