Final answer:
The Great Migration offered African Americans improved economic opportunities by moving to the North, and the 19th Amendment granted women the right to vote, significantly advancing gender equality.
Step-by-step explanation:
During the Progressive Era, two major changes for African Americans and women were the Great Migration and the granting of women's suffrage, respectively. The Great Migration was a movement where nearly 350,000 African Americans moved from the rural South to the urban North to seek better employment opportunities in industries such as steel, mining, and shipbuilding. This change was positive as it offered African Americans a chance to escape the oppressive conditions of the South and find improved economic opportunities.
For women, the Progressive Era saw the culmination of the women's suffrage movement, leading to the ratification of the 19th Amendment in 1920, which granted women the right to vote. This expansion of democratic participation was a monumental step towards gender equality, providing women with the political power to influence legislation and policies that affected their lives and the society at large.