The first major labor union was founded in 1866 by William Sylvis. It was called the National Labor Union (NLU).
It was the first national federation in the United States but it did not last. It dissolved in 1873. However, it paved the way for other labor unions and organizations.
Marin Preda wrote Morometii
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There were multiple significant social movements after World War I including:
1) Harlem Renaissance- This movement revolved around the explosion of African-American music, art, writing, and culture. During this era, many African-American citizens lived in big cities (like Harlem) and used their talents in order to captivate American citizens. This was a small step towards improved relations between white and black citizens, as they found common interests in things like jazz music.
2) Women's Rights Movement- Women played a significant part in the war effort during World War I. This prompted many women to demand more rights, especially voting rights. This movement that started right after World War I resulted in the passing of the 19th amendment, which granted women the right to vote.