Please answer each one PLEASE

The economic crash that began in 1929 was called the great recession, great depression, great slump, great revolution

Helen is looking at a picture in which some of the border is missing. however, she is still able to understand the object is a picture of an american flag due to the perceptual principle of

Dr. lin, who is a developmental psychologist, believes that human development results from the dynamic interaction between developing persons and their surrounding society. dr. lin believes that culture is not something external that impinges on developing persons but is integral to their development every day via the social context. dr. lin is most likely working within the perspective.