Transition-sentences bring out the logical relation between ideas. You want your paper to read like a continuous argument which good transitions help to facilitate. Words like however, so, additionally do indicate a logical relation between paragraphs, but they are weak. A strong transition makes the relation explicit.
segregation. n. 1. the act of segregating or state of being segregated. 2. (Sociology) sociol the practice or policy of creating separate facilities within the same society for the use of a minority group. 3. (Genetics) genetics the separation at meiosis of the two members of any pair of alleles into separate gametes.
Definition of division. 1  1a : the act or process of dividing : the state of being dividedb : the act, process, or an instance of distributing among a number : distributionc obsolete : a method of arranging or disposing (as troops) 2  2 : one of the parts or groupings into which a whole is divided or is divisible.