Women's roles changed significantly during the 1920s. The 19th amendment granted women's suffrage in 1920, though initially only about 35% of eligible women voted. "Flappers" questioned social norms by wearing shorter dresses and gaining more independence. More single women entered the workforce, though professional careers remained difficult. Many people migrated to cities for new industrial and commercial jobs, changing the rural/urban divide. African Americans migrated north in the "Great Migration" but still faced racism, while Hispanics settled in ethnic neighborhoods in cities like New York. Charles Lindbergh and Amelia Earhart became national heroes through their pioneering aviation achievements, though Earhart mysteriously disappeared on a flight. Sports also grew in popularity