The main factor in the eventual ratification of the Constitution by the states was the inclusion of checks and balances. the large amount of power given to the national government. the creation of the office of vice president. the elegant nature of the separation of powers. the promise that a bill of rights would be added.

The promise that the bill of rights would be added - that was done to appease the people who felt like it gave too much power to a central government.

Explanation:

i don't know the answer to this

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.