Isabel Wilkerson equates the Great Migration with other vast movements of refugees from war or famine

Isabel Wilkerson equates the Great Migration with other vast movements of refugees from war or famine, where people must “go great distances… to reach safety with the hope that life will be better wherever they land.” Talk about migration due to necessity in terms of Ida Mae, George and Robert.

Why did each decide to migrate?

How do their stories differ? How were they similar?