Our government has a system of and that allow each branch to limit the actions of the other two branches. For example, the branch can enact a law, but the branch can veto that law.
Article 1, Section 8, of the U. S. Constitution impacts businesses greatly and is referred to as the clause.

1. checks

2. balances

3. legislative

4. executive

5. Commerce

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 photo collage of women at work during world war 2