Why didn't the south secede from before the election of 1850

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?

The middle east had been subjected to attacks from outside the middle east in ancient, medieval, and modern times. which of the following invasions by outside forces came last in the period of written middle east history before 1300 a. d.?

Supreme court cases can alter history? true or false