Europe contains of almost 50 countries and some are cheaper then the US and others are not. But it all depends if you work in a "cheap" country and get paid you will most likely get paid less then in the US and also spend less since it's cheaper.
no
Not free. but the tuition is much cheaper than in the US
It depends on your preferences
You will enjoy cheaper accommodation, traveling costs, cheaper food, and cheaper shopping.
It is cheaper in the US because the Euro is worth more than the dollar.
Yes you can.
Europe is 10,180,000 km2 while the US is 9,826,675 km2; Europe is larger.
As a whole, yes, Europe's economy is much larger than the US's. Europe collectively has the larger economy in the world.
Yep.
No
Europe is larger than the continental US. Europe - 10,180,000 km2 Continental US - 9,798,364 km2
None. Europe is bigger than the US. Europe=3,930,000 sq mi, the US=3,794,101 sq mi
They are cheaper in Italy than in the US. However countries with lower tax rates probably sell cheaper Lamborghini's.