During the American Civil war, the Confederacy hoped to receive assistance from France and Great Britain because they sold cotton to them.
The dangerous period of rivalry between the United States and the Soviet Union was called the "Cold War" <span />
One factor is the views that you have. If you share the same views for the future with the PAC group then there's higher likeness that you will get their donations. One factor also is belonging in a committee that decides on legislature or something similar. If the PAC group wants some law to be passed, they'll support that committee that's in charge of it.
Veto Power and by passing amendments to the constitution .