World History for Dummies

A self-described "...keen follower and an avid reader of World History" posted this claim. He said that if Columbus hadn't discovered America and the Europeans had never come there'd be no United States and therefore the following amazing things would have happened (he even includes "links" to prove his point:

We would have more of:
Oil because US tops the list of Oil consumers of the world.Top Oil Consumers More electricity because US is the 2nd largest consumer of electricity. Electricit...