"Why does America use so much more energy per unit of GDP output compared to Europe and Japan?"
Because fuel is very cheap especily petrol.
"Why does Europe have a much larger renewable energy sector then America? "
"Why is Europe implementing a hydrogen storage sector as a renewable energy energy carrier(storage)?"
The definition of renewable in europe includes hydrogen which is a sub renewable.(Along with wood burning, bio digesters and waste burning)
True renewable s are wind, wave, tides, hydro and solar. This is because under the science of the 2 laws of thermodynamics the only two sources of outside inputs are the sun and the moons gravity. The moons gravity which power the tides, waves. Solor powers the weather including evaporation/rain for hydro, the weather for wind and sun radiation for solar.
"Why is the USA willing to spend over 5 trillion yearly on the fossil fuel regime(cost of fuels, trade deficits, spending on oil wars, healthcare problems, environmental problems,etc)?"
Politics. The large company's that have a vested interest in oil and coal have more lobbyists than representatives in the 2 USA houses of Government. Also the fear of political unrest.
"It seems this is going to break America and is the main catalyst behind the economic crisis although not mentioned by the media."
The media only speak with and receive information from those at the top.
Look at the work of Bob Hopkins and the transition movement or watch Bob on TEDs.
Transition towns and positive money supporter.