Question: What country does Monte Carlo Millions and Monte Carlo Casino have in common?

Context paragraphs:
1999 Monte Carlo Open: The 1999 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts.  It was the 93rd edition of the Monte Carlo Open, and was part of the ATP Super 9 of the 1999 ATP Tour.  It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 19 April through 25 April 1999.

Monte Carlo Casino: Officially named "Casino de Monte-Carlo", the Monte Carlo Casino is a gambling and entertainment complex located in Monaco.  It includes a casino, the Grand Théâtre de Monte Carlo, and the office of Les Ballets de Monte Carlo.

Monte Carlo Millions: The Monte Carlo Millions was the first ever poker tournament to be staged in the city-state of Monaco.  The inaugural event was completed on 12 November 2004.  Apparently birthed out of the preceding explosion of Texas Hold 'em popularity, it was conceived of and sponsored by Prima Poker.  The field was limited to 80 players and the buy-in was US$14,000.  The majority of the competitors were world famous professionals, with the remainder of the field online satellite winners and lesser known professionals.

1997 Monte Carlo Open: The 1997 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts.  It was the 91st edition of the Monte Carlo Open, and was part of the ATP Super 9 of the 1997 ATP Tour.  It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 21 April through 27 April 1997.

Dynamic Monte Carlo method: In chemistry, dynamic Monte Carlo (DMC) is a Monte Carlo method for modeling the dynamic behaviors of molecules by comparing the rates of individual steps with random numbers.  It is essentially the same as Kinetic Monte Carlo.  Unlike the Metropolis Monte Carlo method, which has been employed to study systems at equilibrium, the DMC method is used to investigate non-equilibrium systems such as a reaction, diffusion, and so-forth (Meng and Weinberg 1994).  This method is mainly applied to analyze adsorbates' behavior on surfaces.  The DMC method is very similar to the kinetic Monte Carlo method.

1998 Monte Carlo Open: The 1998 Monte Carlo Open was a men's tennis tournament played on outdoor clay courts.  It was the 92nd edition of the Monte Carlo Open, and was part of the ATP Masters Series of the 1998 ATP Tour.  It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 20 April through 26 April 1998.

2000 Monte Carlo Masters: The 2000 Monte Carlo Masters was a men's tennis tournament played on outdoor clay courts.  It was the 94th edition of the Monte Carlo Masters, and was part of the ATP Masters Series of the 2000 ATP Tour.  It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France, near Monte Carlo, Monaco, from 17 April through 23 April 2000.

Monte Carlo (2011 film): Monte Carlo is a 2011 American romantic comedy film based on "Headhunters" by Jules Bass.  It was directed by Thomas Bezucha.  Denise Di Novi, Alison Greenspan, Nicole Kidman, and Arnon Milchan produced the film for Fox 2000 Pictures and Regency Enterprises.  It began production in Harghita, Romania on May 5, 2010.  "Monte Carlo" stars Selena Gomez, Leighton Meester and Katie Cassidy as three friends posing as wealthy socialites in Monte Carlo, Monaco.  The film was released on July 1, 2011.  It features the song "Who Says" by Selena Gomez & the Scene and numerous songs by British singer Mika.  "Monte Carlo" received mixed to negative reviews from critics, but earned over $39 million on a $20 million budget.  Fox Home Entertainment released "Monte Carlo" on DVD and Blu-ray Disc on October 18, 2011.

Quantum Monte Carlo: Quantum Monte Carlo encompasses a large family of computational methods whose common aim is the study of complex quantum systems.  One of the major goals of these approaches is to provide a reliable solution (or an accurate approximation) of the quantum many-body problem.  The diverse flavor of quantum Monte Carlo approaches all share the common use of the Monte Carlo method to handle the multi-dimensional integrals that arise in the different formulations of the many-body problem.  The quantum Monte Carlo methods allow for a direct treatment and description of complex many-body effects encoded in the wave function, going beyond mean field theory and offering an exact solution of the many-body problem in some circumstances.  In particular, there exist numerically exact and polynomially-scaling algorithms to exactly study static properties of boson systems without geometrical frustration.  For fermions, there exist very good approximations to their static properties and numerically exact exponentially scaling quantum Monte Carlo algorithms, but none that are both.

Monte Carlo: Monte Carlo (] ; French: "Monte-Carlo" , ] , or colloquially "Monte-Carl", ] ; Monégasque: "Monte-Carlu") officially refers to an administrative area of the Principality of Monaco, specifically the ward of Monte Carlo/Spélugues, where the Monte Carlo Casino is located.  Informally the name also refers to a larger district, the Monte Carlo Quarter (corresponding to the former municipality of Monte Carlo), which besides Monte Carlo/Spélugues also includes the wards of La Rousse/Saint Roman, Larvotto/Bas Moulins, and Saint Michel.  The permanent population of the ward of Monte Carlo is about 3,500, while that of the quarter is about 15,000.  Monaco has four traditional quarters.  From west to east they are: Fontvieille (the newest), Monaco-Ville (the oldest), La Condamine, and Monte Carlo.

Supporting paragraphs: Monte Carlo Millions Monte Carlo Casino
Answer: Monaco