There were many changes took place from the early to late 19th century. But the most early change occurred in the union states in the 1800s, where the women's rights movements gained strength.
The women's movement spread excessively for the rights of women from the 1848 when in a women's rights convention held in Seneca Falls, New York, A newspaper editor and abolitionist Frederick Douglass attends and gives a speech supporting universal voting rights, which helps convince the convention to adopt a resolution calling for women's suffrage.
Later on, the movement spread a lot, and they received the equality as well as the voting rights.
Learn more about the women's movement here.
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