Nobody is helping me please helppp PLEASE PLEASE help meee! How did Madam C. J. Walker affect the lives of many Americans in the Industrial Age?

O Walker invented products that paved the way for many of the devices we use today, such as the film camera.

O Walker improved the telegraph, which helped trains avoid dangerous collisions and kept passengers safe.

O Walker improved the assembly line, which changed that way that unskilled laborers worked in factories.

O Walker produced cosmetics and hair products for African American women, which was an underserved market at the time.