The history of Mexico, a country in the southern portion of North America, covers a period of more than three millennia. First populated more than 13,000 years ago, the territory had complex indigenous civilizations before being conquered by the Spanish in the 16th century.
Marvel's Avengers: Age of Ultron stars Robert Downey Jr., who returns as Iron Man, along with Chris Hemsworth as Thor, Mark Ruffalo as Hulk and Chris Evans as Captain America.
Cast member Scarlett Johansson arrives for a red carpet event for the movie Her at the Rome Film Festival, November 10, 2013. Scarlett Johansson, who plays the Black Widow in Marvel's Avengers movies, recently revealed her character's backstory will be unveiled in Avengers: Age of Ultron..