If you are driving a bus or truck, for each 10 feet of length in your vehicle, keep at least second between you and the vehicle in front of you. A. 1/4 B. 1/2 C. 3/4 D. 1

In what is known as the great migration, large numbers of african americans moved from the rural south to northern cities, beginning in the early twentieth century. what motivated this large-scale movement?