Discrimination that is upheld by law is.
a- de facto segregation.
b- institutionalized discrimination.
c- de jute discrimination.
d- legal discrimination

Answer carbon dioxide ice;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!