4. The passing of the 19th amendment in the US

The 19th Amendment, ratified in 1920, granted women in the United States the right to vote. This achievement was the culmination of a long struggle known as the women's suffrage movement, which began in the mid-19th century. Suffragists organized campaigns, protests, and advocated for equality, facing significant opposition along the way. The amendment marked a significant victory for gender equality, as it recognized women's contributions to society and their role in shaping democracy. Its passage represented both the persistence of activists and a growing recognition of women's rights in American society.