who are the mau mau fighter (a)British troops in Nigeria (b) guerrilla fighters in Kenya(c) British troops in Kenya(d)guerrilla fighters in Nigeria

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.