That was a MAJOR unforseen consequence of the Interstate system - the death of a lot of the rail in the US. Not that I personally mind - there's more freedom in being able to drive a car than ride a rail.
That's a toss-up. Some of the cars they have don't have the safety and emission features of their American counterparts, and for us to be able to get some of their super-efficient diesels, there would need to be changes there as well.
Here's the present issue. The number of violent Islamists - or those who support them - are a greater percentage - VASTLY greater - than in Christianity, and Islam has done a VERY poor job of self-policing.
Really? Pro-business dictators have the blood of MILLIONS on their heads?
As bad as some of the past mistakes of the US has been - and slavery is as much the fault of European mercantilism and monarchy - if not more so - than anything that ever happened in the US (because THEY started that particular version of slavery) - NOTHING has been as brutal and repressive as communist regimes (China and Russia in particular).
Stalin's successes ONLY came through repression and hard-line aggression toward his own people - as have all Communist "successes."