What was Lincoln's reasoning for why it would make sense to pay $300,000,000 to the slave states upon the emancipation of their slaves?

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.        

answer; (true);