Professor perlman was interested in comparing two textbooks to determine whether one used more sexist language than the other. perlman counted the number of times a gender reference (ex: "he," "she," "chairman," etc.) appeared in each book. perlman was doing

What policy did "jim crow" laws put in place? black codes integration segregation 2. the supreme court case that established the doctrine of "separate but equal" was dred scott v. sandford plessy v. ferguson brown v. board of education 3. the supreme court case that overturned the doctrine of "separate but equal" wasdred scott v. sandford plessy v. ferguson brown v. board of education