Space and gas taxes.<p>Europeans do not have significant amounts of space to build housing supplies, that&#x27;s why space&#x2F;m^2 is much higher than here in the states, witness San Fancisco&#x27;s trolley system that caused suburbanization (or at least enabled it).<p>Gas Taxes in Europe are double than here in the states[1], US gas is taxed at relatively low rates when compared to other nations. Used as a user tax here in the states, its predominant purpose is to fund roadway improvements and maintenance; however, it is used to fund transit and other items. In Europe, the higher gas tax is used to drive (good one Agustus) less travel and subsidize rail lines.<p>The trams &#x2F; streetcars in Europe work because the suburbanization was stopped by high government taxes and forces the populous to pay more for a lower comparable standard of living.<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;File:Fuel_tax_in_OECD_countries,_2010..png" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;File:Fuel_tax_in_OECD_countrie...</a><p>*Edited for why, if you disagree, please provide an alternative opinion. I have taken the time to provide a discourse, if a downvote to it is necessary, then please provide a reason.