Thnk u soo much maam 💐 We and they group ...A.schutz Ingroup out group.....sumner CH cooley ...primary and secondary group Ferdinand tonnies ....geminshalft (community) Gesselshaft (association ) Giddings ....4 types of group Genetic Congregant Disjunctive and Overlapping group Miller ...vertical and horizontal group Comb....positive and negative group Merton ....positive and negative refrence group ... 💐💐