When was the very first Eurovision Song Contest held?

Which country won the first Eurovision?

Which country has won the most times in Eurovision?

The "Big 5" European countries: Spain, France, the United Kingdom, Germany, and Italy, automatically qualify for the Grand Final of the contest every year.

How are points/scores given to the competing artists?

No matter how many televote points an artist gets, it is always the amount of jury/judge votes that determines the final winner.

For a country to compete in Eurovision, it must be geographically located in the continent of Europe.

Which countries not geographically in Europe are allowed to compete in Eurovision/have in the past?

Which of these Eurovision-winning artists has become the most mainstream in America?

And which two of these other artists that made their careers mainstream in America have won Eurovision before?