Identify the characteristics of the Shang and Zhou dynasties. and even nobles by long Shang Dynasty Zhou Dynasty og central government the first Chinese dynasty worship of the god Tian good farming methods Seudal system

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

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