The U.S. Constitution established America's national government and fundamental laws, and guaranteed certain basic rights for its citizens. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia, presided over by George Washington.
The answer would logically be A.
An oil spill covering an entire ocean has nothing to do with politics.
Nor does C.
B doesn't really contribute much to the question at hand. Sure, he's a politician, but who cares about the large glasses or big ears?
Throughout history technological developments have changed the way war has been fought.
Cannon made the large defensive castles of the middle ages obsolete.
Firearms made the suits of armor worn by medieval knights worthless.
Aircraft allowed nations to fight in the sky as well as on the ground, and bomb their enemies far behind any front line on the ground.
Small, portable anti-aircraft systems lead to stealth technology, and also changed how bombing campaigns were carried out, and have even lead to the use of weapon equipped drones.