I'm not sure if that is true. The US has 104 operating power reactors. I think if you add up those in Western Europe, in France, UK, Germany, Spain, Belgium for example, it will still be fewer. A good source of information is www.world-nuclear.org
No.
yes
Levelized cost of kwh from a nuclear power plant is cheaper than from any fossil fueled power plants.
Yes
Canada has 7 nuclear power stations (some with more than one reactor) which produce about 15% of Canada's electrical power.
extracting energy from nuclear fuels is more expensive than extracting energy from fossil fuels
It costs more to obtain the fuel
Nuclear power plants were made in the hope of providing a more efficient source of electricity than is obtained from coal powered plants.
Wind power can be quite costly over time, but nuclear power creates wastes that cost a lot of money to dispose of, let alone getting the nuclear rods in the first place. However, nuclear power can provide much more power than wind power, so they are more or less equals.
Extracting energy from nuclear fuels is more expensive than extracting energy from fossil fuels.
He did not invent or create nuclear power he dicovered the relationship between Weight and Mass for instance E=MC2 is a famous formula but this was the basis for making Nuclear power einstein was more theory than creativity
Europeans might be less likely than Americans to support nuclear power because of the events at Chernobyl in 1986. Large swaths of Europe were exposed to dangerous levels of radiation due to wind patterns.