We need to be careful to include variables in our research which might affect the relationship between the dependent variable and the independent variable

In Common Sense, Thomas Paine argued for

a. the death of King George III. b. a complete separation from England. c. the abolition of slavery. d. a strong, national American government. e. a resolution to oppose British acts.

Why has a possible Iranian nuclear bomb been such a concern to major powers and its neighbors, despite the fact that its spiritual leader suggests that nuclear weapons are forbidden under Islamic law?

a. because Iran has ballistic missiles capable of striking nearly any Middle Eastern target, while its leaders have used hostile language in regard to neighboring Israel and Saudi Arabia b. because Iran has expressed its desire to become a regional hegemon over time c. because its leaders have repeatedly suggested that Iran’s signing of a 1968 nuclear disarmament treaty no longer matters, since the action was taken under the previous regime d. because Western leaders and Iran’s neighbors would have limited options in trying to stop it from building or acquiring a nuclear weapon