What is the process in which one nation conquered people? What are the first signs of trouble and how does the escalation happen step-by-step list the steps (Question inspired from Night by Elie Wiesel)

Read this excerpt from leah missbach day's foreword to wheels of change.bicycles have long played a role in my life. as a young woman, i rode one year-round before i had a car. but it was later in adulthood that the bicycle became more than a source of transportation for me. the bicycle actually began to truly shape the way i saw the world.what is the author's purpose for including this in the foreword?