The regions two main resources for trade during this time were silver and diamonds true or false

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.        

a.. a conflict between her competing identities.. apex

answer; pentagon papers, vietnam draft-resistor, james dean, american revolution;