Answer: Egypt
Pharaoh was the official title given to the rulers of ancient Egypt.

Answer: No

Answer: John Lennon
At the age of 40, John Lennon was shot and killed on December 8, 1980 in New York City, United States.

Answer: Madison Keys
Naomi Osaka was defeated by Madison Keys of America in the third round.

Answer: Paul Erdős, of course!
As the Erdős number describes the "collaborative distance" in authorship of mathematical papers between mathematician Paul Erdős and another person it is only natural that Paul Erdős holds this position.

Answer: Marty Schottenheimer
On this track from the classic "the Slim Shady LP", Eminem dropped the line "cursing at you players worse than Marty Schottenheimer".

Answer: Canada
Canada (Nova Scotia in particular) is the leading exporter of Christmas trees.

Answer: Jamaica
Red Stripe beer, introduced in 1928, is a product of the Desnoes & Geddes brewing company located in Jamaica.

Answer: Order of Merlin
The Order of Merlin was originally founded to defend Muggles.

Answer: 20
The Ishmeelites gave Joseph's brothers 20 pieces of silver in exchange for Joseph.